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>

1 files changed, 15 insertions, 4 deletions

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index e080e1930cc..1264102cdcb 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();
 }