From 66aa66ea31371daad562bf22ff245caf707d5d40 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Sun, 11 Jan 2009 12:02:54 -0300 Subject: [PATCH] V4L/DVB (10212): Convert to be a pci driver This is a really old and crufty driver that wasn't using the long established pci driver framework. Signed-off-by: Trent Piepho Acked-by: Jean Delvare [mchehab@redhat.com: Cleaned up a few CodingStyle issues] Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/zoran/zoran_card.c | 596 +++++++++++------------ drivers/media/video/zoran/zoran_card.h | 2 +- drivers/media/video/zoran/zoran_driver.c | 2 +- 3 files changed, 296 insertions(+), 304 deletions(-) diff --git a/drivers/media/video/zoran/zoran_card.c b/drivers/media/video/zoran/zoran_card.c index 4e8ecf356ad0..e987d53c2943 100644 --- a/drivers/media/video/zoran/zoran_card.c +++ b/drivers/media/video/zoran/zoran_card.c @@ -153,16 +153,13 @@ MODULE_DESCRIPTION("Zoran-36057/36067 JPEG codec driver"); MODULE_AUTHOR("Serguei Miridonov"); MODULE_LICENSE("GPL"); -#if (defined(CONFIG_VIDEO_ZORAN_MODULE) && defined(MODULE)) static struct pci_device_id zr36067_pci_tbl[] = { - {PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36057, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { PCI_DEVICE(PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36057), }, {0} }; MODULE_DEVICE_TABLE(pci, zr36067_pci_tbl); -#endif -int zoran_num; /* number of Buzs in use */ +atomic_t zoran_num = ATOMIC_INIT(0); /* number of Buzs in use */ struct zoran *zoran[BUZ_MAX]; /* videocodec bus functions ZR36060 */ @@ -1146,7 +1143,7 @@ zr36057_init (struct zoran *zr) strcpy(zr->video_dev->name, ZR_DEVNAME(zr)); err = video_register_device(zr->video_dev, VFL_TYPE_GRABBER, video_nr[zr->id]); if (err < 0) - goto exit_unregister; + goto exit_free; zoran_init_hardware(zr); if (zr36067_debug > 2) @@ -1161,19 +1158,19 @@ zr36057_init (struct zoran *zr) zr->initialized = 1; return 0; -exit_unregister: - zoran_unregister_i2c(zr); exit_free: kfree(zr->stat_com); kfree(zr->video_dev); return err; } -static void -zoran_release (struct zoran *zr) +static void __devexit zoran_remove(struct pci_dev *pdev) { + struct zoran *zr = pci_get_drvdata(pdev); + if (!zr->initialized) goto exit_free; + /* unregister videocodec bus */ if (zr->codec) { struct videocodec_master *master = zr->codec->master_data; @@ -1202,6 +1199,7 @@ zoran_release (struct zoran *zr) pci_disable_device(zr->pci_dev); video_unregister_device(zr->video_dev); exit_free: + pci_set_drvdata(pdev, NULL); kfree(zr); } @@ -1264,338 +1262,347 @@ zoran_setup_videocodec (struct zoran *zr, * Scan for a Buz card (actually for the PCI controller ZR36057), * request the irq and map the io memory */ -static int __devinit -find_zr36057 (void) +static int __devinit zoran_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) { unsigned char latency, need_latency; struct zoran *zr; - struct pci_dev *dev = NULL; int result; struct videocodec_master *master_vfe = NULL; struct videocodec_master *master_codec = NULL; int card_num; char *i2c_enc_name, *i2c_dec_name, *codec_name, *vfe_name; + unsigned int nr; - zoran_num = 0; - while (zoran_num < BUZ_MAX && - (dev = pci_get_device(PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36057, dev)) != NULL) { - card_num = card[zoran_num]; - zr = kzalloc(sizeof(struct zoran), GFP_KERNEL); - if (!zr) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - kzalloc failed\n", - ZORAN_NAME); - continue; - } - zr->pci_dev = dev; - //zr->zr36057_mem = NULL; - zr->id = zoran_num; - snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%u]", zr->id); - spin_lock_init(&zr->spinlock); - mutex_init(&zr->resource_lock); - if (pci_enable_device(dev)) - goto zr_free_mem; - zr->zr36057_adr = pci_resource_start(zr->pci_dev, 0); - pci_read_config_byte(zr->pci_dev, PCI_CLASS_REVISION, - &zr->revision); - if (zr->revision < 2) { - dprintk(1, - KERN_INFO - "%s: Zoran ZR36057 (rev %d) irq: %d, memory: 0x%08x.\n", - ZR_DEVNAME(zr), zr->revision, zr->pci_dev->irq, - zr->zr36057_adr); - if (card_num == -1) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - no card specified, please use the card=X insmod option\n", - ZR_DEVNAME(zr)); - goto zr_free_mem; - } - } else { - int i; - unsigned short ss_vendor, ss_device; - - ss_vendor = zr->pci_dev->subsystem_vendor; - ss_device = zr->pci_dev->subsystem_device; - dprintk(1, - KERN_INFO - "%s: Zoran ZR36067 (rev %d) irq: %d, memory: 0x%08x\n", - ZR_DEVNAME(zr), zr->revision, zr->pci_dev->irq, - zr->zr36057_adr); - dprintk(1, - KERN_INFO - "%s: subsystem vendor=0x%04x id=0x%04x\n", - ZR_DEVNAME(zr), ss_vendor, ss_device); - if (card_num == -1) { - dprintk(3, - KERN_DEBUG - "%s: find_zr36057() - trying to autodetect card type\n", - ZR_DEVNAME(zr)); - for (i=0;i= BUZ_MAX) { + dprintk(1, + KERN_ERR + "%s: driver limited to %d card(s) maximum\n", + ZORAN_NAME, BUZ_MAX); + return -ENOENT; + } - if (card_num < 0 || card_num >= NUM_CARDS) { - dprintk(2, - KERN_ERR - "%s: find_zr36057() - invalid cardnum %d\n", - ZR_DEVNAME(zr), card_num); - goto zr_free_mem; - } + card_num = card[nr]; + zr = kzalloc(sizeof(struct zoran), GFP_KERNEL); + if (!zr) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - kzalloc failed\n", + ZORAN_NAME); + /* The entry in zoran[] gets leaked */ + return -ENOMEM; + } + zr->pci_dev = pdev; + zr->id = nr; + snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%u]", zr->id); + spin_lock_init(&zr->spinlock); + mutex_init(&zr->resource_lock); + if (pci_enable_device(pdev)) + goto zr_free_mem; + zr->zr36057_adr = pci_resource_start(zr->pci_dev, 0); + pci_read_config_byte(zr->pci_dev, PCI_CLASS_REVISION, &zr->revision); + if (zr->revision < 2) { + dprintk(1, + KERN_INFO + "%s: Zoran ZR36057 (rev %d) irq: %d, memory: 0x%08x.\n", + ZR_DEVNAME(zr), zr->revision, zr->pci_dev->irq, + zr->zr36057_adr); - /* even though we make this a non pointer and thus - * theoretically allow for making changes to this struct - * on a per-individual card basis at runtime, this is - * strongly discouraged. This structure is intended to - * keep general card information, no settings or anything */ - zr->card = zoran_cards[card_num]; - snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), - "%s[%u]", zr->card.name, zr->id); - - zr->zr36057_mem = ioremap_nocache(zr->zr36057_adr, 0x1000); - if (!zr->zr36057_mem) { + if (card_num == -1) { dprintk(1, KERN_ERR - "%s: find_zr36057() - ioremap failed\n", + "%s: find_zr36057() - no card specified, please use the card=X insmod option\n", ZR_DEVNAME(zr)); goto zr_free_mem; } + } else { + int i; + unsigned short ss_vendor, ss_device; - result = request_irq(zr->pci_dev->irq, - zoran_irq, - IRQF_SHARED | IRQF_DISABLED, - ZR_DEVNAME(zr), - (void *) zr); - if (result < 0) { - if (result == -EINVAL) { + ss_vendor = zr->pci_dev->subsystem_vendor; + ss_device = zr->pci_dev->subsystem_device; + dprintk(1, + KERN_INFO + "%s: Zoran ZR36067 (rev %d) irq: %d, memory: 0x%08x\n", + ZR_DEVNAME(zr), zr->revision, zr->pci_dev->irq, + zr->zr36057_adr); + dprintk(1, + KERN_INFO + "%s: subsystem vendor=0x%04x id=0x%04x\n", + ZR_DEVNAME(zr), ss_vendor, ss_device); + if (card_num == -1) { + dprintk(3, + KERN_DEBUG + "%s: find_zr36057() - trying to autodetect card type\n", + ZR_DEVNAME(zr)); + for (i = 0; i < NUM_CARDS; i++) { + if (ss_vendor == zoran_cards[i].vendor_id && + ss_device == zoran_cards[i].device_id) { + dprintk(3, + KERN_DEBUG + "%s: find_zr36057() - card %s detected\n", + ZR_DEVNAME(zr), + zoran_cards[i].name); + card_num = i; + break; + } + } + if (i == NUM_CARDS) { dprintk(1, KERN_ERR - "%s: find_zr36057() - bad irq number or handler\n", + "%s: find_zr36057() - unknown card\n", ZR_DEVNAME(zr)); - } else if (result == -EBUSY) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - IRQ %d busy, change your PnP config in BIOS\n", - ZR_DEVNAME(zr), zr->pci_dev->irq); - } else { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - can't assign irq, error code %d\n", - ZR_DEVNAME(zr), result); + goto zr_free_mem; } - goto zr_unmap; } + } - /* set PCI latency timer */ - pci_read_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, - &latency); - need_latency = zr->revision > 1 ? 32 : 48; - if (latency != need_latency) { - dprintk(2, - KERN_INFO - "%s: Changing PCI latency from %d to %d.\n", - ZR_DEVNAME(zr), latency, need_latency); - pci_write_config_byte(zr->pci_dev, - PCI_LATENCY_TIMER, - need_latency); - } + if (card_num < 0 || card_num >= NUM_CARDS) { + dprintk(2, + KERN_ERR + "%s: find_zr36057() - invalid cardnum %d\n", + ZR_DEVNAME(zr), card_num); + goto zr_free_mem; + } - zr36057_restart(zr); - /* i2c */ - dprintk(2, KERN_INFO "%s: Initializing i2c bus...\n", + /* even though we make this a non pointer and thus + * theoretically allow for making changes to this struct + * on a per-individual card basis at runtime, this is + * strongly discouraged. This structure is intended to + * keep general card information, no settings or anything */ + zr->card = zoran_cards[card_num]; + snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), + "%s[%u]", zr->card.name, zr->id); + + zr->zr36057_mem = ioremap_nocache(zr->zr36057_adr, 0x1000); + if (!zr->zr36057_mem) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - ioremap failed\n", ZR_DEVNAME(zr)); + goto zr_free_mem; + } - /* i2c decoder */ - if (decoder[zr->id] != -1) { - i2c_dec_name = i2cid_to_modulename(decoder[zr->id]); - zr->card.i2c_decoder = decoder[zr->id]; - } else if (zr->card.i2c_decoder != 0) { - i2c_dec_name = - i2cid_to_modulename(zr->card.i2c_decoder); + result = request_irq(zr->pci_dev->irq, zoran_irq, + IRQF_SHARED | IRQF_DISABLED, ZR_DEVNAME(zr), zr); + if (result < 0) { + if (result == -EINVAL) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - bad irq number or handler\n", + ZR_DEVNAME(zr)); + } else if (result == -EBUSY) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - IRQ %d busy, change your PnP config in BIOS\n", + ZR_DEVNAME(zr), zr->pci_dev->irq); } else { - i2c_dec_name = NULL; + dprintk(1, + KERN_ERR + "%s: find_zr36057() - can't assign irq, error code %d\n", + ZR_DEVNAME(zr), result); } + goto zr_unmap; + } - if (i2c_dec_name) { - if ((result = request_module(i2c_dec_name)) < 0) { - dprintk(1, - KERN_ERR - "%s: failed to load module %s: %d\n", - ZR_DEVNAME(zr), i2c_dec_name, result); - } - } + /* set PCI latency timer */ + pci_read_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, + &latency); + need_latency = zr->revision > 1 ? 32 : 48; + if (latency != need_latency) { + dprintk(2, + KERN_INFO + "%s: Changing PCI latency from %d to %d\n", + ZR_DEVNAME(zr), latency, need_latency); + pci_write_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, + need_latency); + } - /* i2c encoder */ - if (encoder[zr->id] != -1) { - i2c_enc_name = i2cid_to_modulename(encoder[zr->id]); - zr->card.i2c_encoder = encoder[zr->id]; - } else if (zr->card.i2c_encoder != 0) { - i2c_enc_name = - i2cid_to_modulename(zr->card.i2c_encoder); - } else { - i2c_enc_name = NULL; - } + zr36057_restart(zr); + /* i2c */ + dprintk(2, KERN_INFO "%s: Initializing i2c bus...\n", + ZR_DEVNAME(zr)); + + /* i2c decoder */ + if (decoder[zr->id] != -1) { + i2c_dec_name = i2cid_to_modulename(decoder[zr->id]); + zr->card.i2c_decoder = decoder[zr->id]; + } else if (zr->card.i2c_decoder != 0) { + i2c_dec_name = i2cid_to_modulename(zr->card.i2c_decoder); + } else { + i2c_dec_name = NULL; + } - if (i2c_enc_name) { - if ((result = request_module(i2c_enc_name)) < 0) { - dprintk(1, - KERN_ERR - "%s: failed to load module %s: %d\n", - ZR_DEVNAME(zr), i2c_enc_name, result); - } + if (i2c_dec_name) { + result = request_module(i2c_dec_name); + if (result < 0) { + dprintk(1, + KERN_ERR + "%s: failed to load module %s: %d\n", + ZR_DEVNAME(zr), i2c_dec_name, result); } + } - if (zoran_register_i2c(zr) < 0) { + /* i2c encoder */ + if (encoder[zr->id] != -1) { + i2c_enc_name = i2cid_to_modulename(encoder[zr->id]); + zr->card.i2c_encoder = encoder[zr->id]; + } else if (zr->card.i2c_encoder != 0) { + i2c_enc_name = i2cid_to_modulename(zr->card.i2c_encoder); + } else { + i2c_enc_name = NULL; + } + + if (i2c_enc_name) { + result = request_module(i2c_enc_name); + if (result < 0) { dprintk(1, KERN_ERR - "%s: find_zr36057() - can't initialize i2c bus\n", - ZR_DEVNAME(zr)); - goto zr_free_irq; + "%s: failed to load module %s: %d\n", + ZR_DEVNAME(zr), i2c_enc_name, result); } + } - dprintk(2, - KERN_INFO "%s: Initializing videocodec bus...\n", + if (zoran_register_i2c(zr) < 0) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - can't initialize i2c bus\n", ZR_DEVNAME(zr)); + goto zr_free_irq; + } - if (zr->card.video_codec != 0 && - (codec_name = - codecid_to_modulename(zr->card.video_codec)) != NULL) { - if ((result = request_module(codec_name)) < 0) { + dprintk(2, + KERN_INFO "%s: Initializing videocodec bus...\n", + ZR_DEVNAME(zr)); + + if (zr->card.video_codec) { + codec_name = codecid_to_modulename(zr->card.video_codec); + if (codec_name) { + result = request_module(codec_name); + if (result) { dprintk(1, KERN_ERR "%s: failed to load modules %s: %d\n", ZR_DEVNAME(zr), codec_name, result); } } - if (zr->card.video_vfe != 0 && - (vfe_name = - codecid_to_modulename(zr->card.video_vfe)) != NULL) { - if ((result = request_module(vfe_name)) < 0) { + } + if (zr->card.video_vfe) { + vfe_name = codecid_to_modulename(zr->card.video_vfe); + if (vfe_name) { + result = request_module(vfe_name); + if (result < 0) { dprintk(1, KERN_ERR "%s: failed to load modules %s: %d\n", ZR_DEVNAME(zr), vfe_name, result); } } + } - /* reset JPEG codec */ - jpeg_codec_sleep(zr, 1); - jpeg_codec_reset(zr); - /* video bus enabled */ - /* display codec revision */ - if (zr->card.video_codec != 0) { - master_codec = zoran_setup_videocodec(zr, - zr->card.video_codec); - if (!master_codec) - goto zr_unreg_i2c; - zr->codec = videocodec_attach(master_codec); - if (!zr->codec) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - no codec found\n", - ZR_DEVNAME(zr)); - goto zr_free_codec; - } - if (zr->codec->type != zr->card.video_codec) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - wrong codec\n", - ZR_DEVNAME(zr)); - goto zr_detach_codec; - } + /* reset JPEG codec */ + jpeg_codec_sleep(zr, 1); + jpeg_codec_reset(zr); + /* video bus enabled */ + /* display codec revision */ + if (zr->card.video_codec != 0) { + master_codec = zoran_setup_videocodec(zr, zr->card.video_codec); + if (!master_codec) + goto zr_unreg_i2c; + zr->codec = videocodec_attach(master_codec); + if (!zr->codec) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - no codec found\n", + ZR_DEVNAME(zr)); + goto zr_free_codec; } - if (zr->card.video_vfe != 0) { - master_vfe = zoran_setup_videocodec(zr, - zr->card.video_vfe); - if (!master_vfe) - goto zr_detach_codec; - zr->vfe = videocodec_attach(master_vfe); - if (!zr->vfe) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() - no VFE found\n", - ZR_DEVNAME(zr)); - goto zr_free_vfe; - } - if (zr->vfe->type != zr->card.video_vfe) { - dprintk(1, - KERN_ERR - "%s: find_zr36057() = wrong VFE\n", - ZR_DEVNAME(zr)); - goto zr_detach_vfe; - } + if (zr->codec->type != zr->card.video_codec) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - wrong codec\n", + ZR_DEVNAME(zr)); + goto zr_detach_codec; } - /* Success so keep the pci_dev referenced */ - pci_dev_get(zr->pci_dev); - zoran[zoran_num++] = zr; - continue; - - // Init errors - zr_detach_vfe: - videocodec_detach(zr->vfe); - zr_free_vfe: - kfree(master_vfe); - zr_detach_codec: - videocodec_detach(zr->codec); - zr_free_codec: - kfree(master_codec); - zr_unreg_i2c: - zoran_unregister_i2c(zr); - zr_free_irq: - btwrite(0, ZR36057_SPGPPCR); - free_irq(zr->pci_dev->irq, zr); - zr_unmap: - iounmap(zr->zr36057_mem); - zr_free_mem: - kfree(zr); - continue; } - if (dev) /* Clean up ref count on early exit */ - pci_dev_put(dev); + if (zr->card.video_vfe != 0) { + master_vfe = zoran_setup_videocodec(zr, zr->card.video_vfe); + if (!master_vfe) + goto zr_detach_codec; + zr->vfe = videocodec_attach(master_vfe); + if (!zr->vfe) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() - no VFE found\n", + ZR_DEVNAME(zr)); + goto zr_free_vfe; + } + if (zr->vfe->type != zr->card.video_vfe) { + dprintk(1, + KERN_ERR + "%s: find_zr36057() = wrong VFE\n", + ZR_DEVNAME(zr)); + goto zr_detach_vfe; + } + } + zoran[nr] = zr; - if (zoran_num == 0) { - dprintk(1, KERN_INFO "No known MJPEG cards found.\n"); + /* take care of Natoma chipset and a revision 1 zr36057 */ + if ((pci_pci_problems & PCIPCI_NATOMA) && zr->revision <= 1) { + zr->jpg_buffers.need_contiguous = 1; + dprintk(1, + KERN_INFO + "%s: ZR36057/Natoma bug, max. buffer size is 128K\n", + ZR_DEVNAME(zr)); } - return zoran_num; + + if (zr36057_init(zr) < 0) + goto zr_detach_vfe; + + zoran_proc_init(zr); + + pci_set_drvdata(pdev, zr); + + return 0; + +zr_detach_vfe: + videocodec_detach(zr->vfe); +zr_free_vfe: + kfree(master_vfe); +zr_detach_codec: + videocodec_detach(zr->codec); +zr_free_codec: + kfree(master_codec); +zr_unreg_i2c: + zoran_unregister_i2c(zr); +zr_free_irq: + btwrite(0, ZR36057_SPGPPCR); + free_irq(zr->pci_dev->irq, zr); +zr_unmap: + iounmap(zr->zr36057_mem); +zr_free_mem: + kfree(zr); + + return -ENODEV; } -static int __init -init_dc10_cards (void) +static struct pci_driver zoran_driver = { + .name = "zr36067", + .id_table = zr36067_pci_tbl, + .probe = zoran_probe, + .remove = zoran_remove, +}; + +static int __init zoran_init(void) { - int i; + int res; memset(zoran, 0, sizeof(zoran)); printk(KERN_INFO "Zoran MJPEG board driver version %d.%d.%d\n", MAJOR_VERSION, MINOR_VERSION, RELEASE_VERSION); - /* Look for cards */ - if (find_zr36057() < 0) { - return -EIO; - } - if (zoran_num == 0) - return -ENODEV; - dprintk(1, KERN_INFO "%s: %d card(s) found\n", ZORAN_NAME, - zoran_num); /* check the parameters we have been given, adjust if necessary */ if (v4l_nbufs < 2) v4l_nbufs = 2; @@ -1637,37 +1644,22 @@ init_dc10_cards (void) ZORAN_NAME); } - /* take care of Natoma chipset and a revision 1 zr36057 */ - for (i = 0; i < zoran_num; i++) { - struct zoran *zr = zoran[i]; - - if ((pci_pci_problems & PCIPCI_NATOMA) && zr->revision <= 1) { - zr->jpg_buffers.need_contiguous = 1; - dprintk(1, - KERN_INFO - "%s: ZR36057/Natoma bug, max. buffer size is 128K\n", - ZR_DEVNAME(zr)); - } - - if (zr36057_init(zr) < 0) { - for (i = 0; i < zoran_num; i++) - zoran_release(zoran[i]); - return -EIO; - } - zoran_proc_init(zr); + res = pci_register_driver(&zoran_driver); + if (res) { + dprintk(1, + KERN_ERR + "%s: Unable to register ZR36057 driver\n", + ZORAN_NAME); + return res; } return 0; } -static void __exit -unload_dc10_cards (void) +static void __exit zoran_exit(void) { - int i; - - for (i = 0; i < zoran_num; i++) - zoran_release(zoran[i]); + pci_unregister_driver(&zoran_driver); } -module_init(init_dc10_cards); -module_exit(unload_dc10_cards); +module_init(zoran_init); +module_exit(zoran_exit); diff --git a/drivers/media/video/zoran/zoran_card.h b/drivers/media/video/zoran/zoran_card.h index e4dc9d29b404..c989448a77de 100644 --- a/drivers/media/video/zoran/zoran_card.h +++ b/drivers/media/video/zoran/zoran_card.h @@ -40,7 +40,7 @@ extern int zr36067_debug; /* Anybody who uses more than four? */ #define BUZ_MAX 4 -extern int zoran_num; +extern atomic_t zoran_num; extern struct zoran *zoran[BUZ_MAX]; extern struct video_device zoran_template; diff --git a/drivers/media/video/zoran/zoran_driver.c b/drivers/media/video/zoran/zoran_driver.c index b58b9dda715c..5e667fd72725 100644 --- a/drivers/media/video/zoran/zoran_driver.c +++ b/drivers/media/video/zoran/zoran_driver.c @@ -1206,7 +1206,7 @@ zoran_open(struct file *file) lock_kernel(); /* find the device */ - for (i = 0; i < zoran_num; i++) { + for (i = 0; i < atomic_read(&zoran_num); i++) { if (zoran[i]->video_dev->minor == minor) { zr = zoran[i]; break; -- GitLab