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-rw-r--r--drivers/block/DAC960.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index c77b6f3c28ea..6fa7b0fdbdfd 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -6562,7 +6562,7 @@ static int DAC960_ProcWriteUserCommand(struct file *file,
if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
CommandBuffer[Count] = '\0';
Length = strlen(CommandBuffer);
- if (CommandBuffer[Length-1] == '\n')
+ if (Length > 0 && CommandBuffer[Length-1] == '\n')
CommandBuffer[--Length] = '\0';
if (Controller->FirmwareType == DAC960_V1_Controller)
return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)