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scsi: megaraid: Fix error check return value of register_chrdev()
[ Upstream commit c5acd61 ] 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>
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