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authorJoe Perches <joe@perches.com>2010-03-10 15:21:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:30 -0800
commit57584c5a3824a15f65d2b065d9f453fc1ae1dab7 (patch)
treee874998d0550a50d73dc191513aeaaf1c12487c6 /drivers/block/floppy.c
parent29f1c7848feb3954939b52fd5b7dca30dbce9426 (diff)
drivers/block/floppy.c: add function is_ready_state
Used a couple of times, might simplify the code a bit. Signed-off-by: Joe Perches <joe@perches.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/floppy.c')
-rw-r--r--drivers/block/floppy.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index e080e1930cc1..1264102cdcb1 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -782,6 +782,12 @@ static inline int is_selected(int dor, int unit)
return ((dor & (0x10 << unit)) && (dor & 3) == unit);
}
+static bool is_ready_state(int status)
+{
+ int state = status & (STATUS_READY | STATUS_DIR | STATUS_DMA);
+ return state == STATUS_READY;
+}
+
static int set_dor(int fdc, char mask, char data)
{
unsigned char unit;
@@ -823,8 +829,10 @@ static void twaddle(void)
DRS->select_date = jiffies;
}
-/* reset all driver information about the current fdc. This is needed after
- * a reset, and after a raw command. */
+/*
+ * Reset all driver information about the current fdc.
+ * This is needed after a reset, and after a raw command.
+ */
static void reset_fdc_info(int mode)
{
int drive;
@@ -1162,7 +1170,8 @@ static int output_byte(char byte)
if (status < 0)
return -1;
- if ((status & (STATUS_READY | STATUS_DIR | STATUS_DMA)) == STATUS_READY) {
+
+ if (is_ready_state(status)) {
fd_outb(byte, FD_DATA);
#ifdef FLOPPY_SANITY_CHECK
output_log[output_log_pos].data = byte;
@@ -1221,8 +1230,10 @@ static int need_more_output(void)
if (status < 0)
return -1;
- if ((status & (STATUS_READY | STATUS_DIR | STATUS_DMA)) == STATUS_READY)
+
+ if (is_ready_state(status))
return MORE_OUTPUT;
+
return result();
}