提交 3dd88030 编写于 作者: V Vincent Whitchurch 提交者: Zheng Zengkai

tty: goldfish: Fix free_irq() on remove

stable inclusion
from stable-v5.10.124
commit 65ca4db68b6819244df9024aea4be55edf8af1ef
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6E7

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=65ca4db68b6819244df9024aea4be55edf8af1ef

--------------------------------

[ Upstream commit 499e13aa ]

Pass the correct dev_id to free_irq() to fix this splat when the driver
is unbound:

 WARNING: CPU: 0 PID: 30 at kernel/irq/manage.c:1895 free_irq
 Trying to free already-free IRQ 65
 Call Trace:
  warn_slowpath_fmt
  free_irq
  goldfish_tty_remove
  platform_remove
  device_remove
  device_release_driver_internal
  device_driver_detach
  unbind_store
  drv_attr_store
  ...

Fixes: 465893e1 ("tty: goldfish: support platform_device with id -1")
Signed-off-by: NVincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20220609141704.1080024-1-vincent.whitchurch@axis.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
上级 dc168eb4
......@@ -428,7 +428,7 @@ static int goldfish_tty_remove(struct platform_device *pdev)
tty_unregister_device(goldfish_tty_driver, qtty->console.index);
iounmap(qtty->base);
qtty->base = NULL;
free_irq(qtty->irq, pdev);
free_irq(qtty->irq, qtty);
tty_port_destroy(&qtty->port);
goldfish_tty_current_line_count--;
if (goldfish_tty_current_line_count == 0)
......
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