提交 e62f89f2 编写于 作者: D David Woodhouse 提交者: David Woodhouse

cxusb: treat firmware data as const

...which means allocating our own copy when we want to modify it.

(stupid thinko fixed by mkrufky)
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
上级 bc179153
......@@ -24,6 +24,7 @@
* see Documentation/dvb/README.dvb-usb for more information
*/
#include <media/tuner.h>
#include <linux/vmalloc.h>
#include "cxusb.h"
......@@ -700,12 +701,26 @@ static int bluebird_patch_dvico_firmware_download(struct usb_device *udev,
if (fw->data[idoff] == (USB_VID_DVICO & 0xff) &&
fw->data[idoff + 1] == USB_VID_DVICO >> 8) {
fw->data[idoff + 2] =
struct firmware new_fw;
u8 *new_fw_data = vmalloc(fw->size);
int ret;
if (!new_fw_data)
return -ENOMEM;
memcpy(new_fw_data, fw->data, fw->size);
new_fw.size = fw->size;
new_fw.data = new_fw_data;
new_fw_data[idoff + 2] =
le16_to_cpu(udev->descriptor.idProduct) + 1;
fw->data[idoff + 3] =
new_fw_data[idoff + 3] =
le16_to_cpu(udev->descriptor.idProduct) >> 8;
return usb_cypress_load_firmware(udev, fw, CYPRESS_FX2);
ret = usb_cypress_load_firmware(udev, &new_fw,
CYPRESS_FX2);
vfree(new_fw_data);
return ret;
}
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册