openkylin
/
platform_kernel-5.15
mirror of https://gitee.com/openkylin/platform_kernel-5.15.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

tty: serial: max3100: Fix error case 

We don't want to free a random address if the entry is wrong, cover
this and WARN if it ever happens.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Cox 2012-09-17 12:00:44 +01:00 committed by Greg Kroah-Hartman
parent d83114e975
commit 41fda9c4d9
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/tty/serial/max3100.c
View File

@ -827,14 +827,16 @@ static int __devexit max3100_remove(struct spi_device *spi)
/* find out the index for the chip we are removing */ /* find out the index for the chip we are removing */
for (i = 0; i < MAX_MAX3100; i++) for (i = 0; i < MAX_MAX3100; i++)
if (max3100s[i] == s) if (max3100s[i] == s) {
dev_dbg(&spi->dev, "%s: removing port %d\n", __func__, i);
uart_remove_one_port(&max3100_uart_driver, &max3100s[i]->port);
kfree(max3100s[i]);
max3100s[i] = NULL;
break; break;
}
dev_dbg(&spi->dev, "%s: removing port %d\n", __func__, i); WARN_ON(i == MAX_MAX3100);
uart_remove_one_port(&max3100_uart_driver, &max3100s[i]->port);
kfree(max3100s[i]);
max3100s[i] = NULL;
/* check if this is the last chip we have */ /* check if this is the last chip we have */
for (i = 0; i < MAX_MAX3100; i++) for (i = 0; i < MAX_MAX3100; i++)
if (max3100s[i]) { if (max3100s[i]) {