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linux-stable/drivers/auxdisplay
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Jianglei Nie 8311961a17 auxdisplay: hd44780: Fix potential memory leak in hd44780_remove() 
[ Upstream commit ddf75a86ab ]

hd44780_probe() allocates a memory chunk for hd with kzalloc() and
makes "lcd->drvdata->hd44780" point to it. When we call hd44780_remove(),
we should release all relevant memory and resource. But "lcd->drvdata
->hd44780" is not released, which will lead to a memory leak.

We should release the "lcd->drvdata->hd44780" in hd44780_remove() to fix
the memory leak bug.

Fixes: 718e05ed92 ("auxdisplay: Introduce hd44780_common.[ch]")
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-03-11 13:57:22 +01:00
..
Kconfig auxdisplay: Fix duplicate CHARLCD config symbol 2021-01-25 22:14:19 +01:00
Makefile auxdisplay: add a driver for lcd2s character display 2020-11-04 11:04:05 +01:00
arm-charlcd.c
…
cfag12864b.c auxdisplay: Replace symbolic permissions with octal permissions 2021-07-16 07:42:35 +02:00
cfag12864bfb.c treewide: Miguel has moved 2021-02-26 09:41:03 -08:00
charlcd.c auxdisplay: charlcd: checking for pointer reference before dereferencing 2022-01-11 15:35:17 +01:00
charlcd.h auxdisplay: Change gotoxy calling interface 2020-11-04 11:04:04 +01:00
hd44780.c auxdisplay: hd44780: Fix potential memory leak in hd44780_remove() 2023-03-11 13:57:22 +01:00
hd44780_common.c auxdisplay: Change gotoxy calling interface 2020-11-04 11:04:04 +01:00
hd44780_common.h auxdisplay: Change gotoxy calling interface 2020-11-04 11:04:04 +01:00
ht16k33.c auxdisplay: ht16k33: Fix frame buffer device blanking 2021-11-18 19:17:02 +01:00
img-ascii-lcd.c auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string 2021-11-18 19:17:02 +01:00
ks0108.c auxdisplay: Replace symbolic permissions with octal permissions 2021-07-16 07:42:35 +02:00
lcd2s.c auxdisplay: lcd2s: Use proper API to free the instance of charlcd object 2022-03-08 19:12:47 +01:00
panel.c treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00