| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.17 048/135] scsi: megaraid: Fix error check return value of register_chrdev() | Date | Mon, 30 May 2022 09:30:06 -0400 |
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From: Lv Ruyi <lv.ruyi@zte.com.cn>
[ Upstream commit c5acd61dbb32b6bda0f3a354108f2b8dcb788985 ]
If major equals 0, register_chrdev() returns an error code when it fails. This function dynamically allocates a major and returns its number on success, so we should use "< 0" to check it instead of "!".
Link: https://lore.kernel.org/r/20220418105755.2558828-1-lv.ruyi@zte.com.cn Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/scsi/megaraid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index bf987f3a7f3f..840175f34d1a 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -4608,7 +4608,7 @@ static int __init megaraid_init(void) * major number allocation. */ major = register_chrdev(0, "megadev_legacy", &megadev_fops); - if (!major) { + if (major < 0) { printk(KERN_WARNING "megaraid: failed to register char device\n"); } -- 2.35.1
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