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-rw-r--r--drivers/block/floppy.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index cd3612e4e2e1..8ef65c085640 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -853,14 +853,17 @@ static void reset_fdc_info(int mode)
/* selects the fdc and drive, and enables the fdc's input/dma. */
static void set_fdc(int drive)
{
+ unsigned int new_fdc = fdc;
+
if (drive >= 0 && drive < N_DRIVE) {
- fdc = FDC(drive);
+ new_fdc = FDC(drive);
current_drive = drive;
}
- if (fdc != 1 && fdc != 0) {
+ if (new_fdc >= N_FDC) {
pr_info("bad fdc value\n");
return;
}
+ fdc = new_fdc;
set_dor(fdc, ~0, 8);
#if N_FDC > 1
set_dor(1 - fdc, ~8, 0);