floppy: remove dead code for drives scanning on ARM

On ARM, function fd_scandrives pre-dates Git era, is #ifed 0 out, not
used, and cannot even compile since it references an fdc variable that's
not declared anywhere (supposed to be the global one that we're turning
to current_fdc apparently).

There was also an ifdefde out include of mach/floppy.h that does not
exist anymore either. Let's get rid of them since they complicate the
fixing of the driver.

Link: https://lore.kernel.org/r/20200301195555.11154-2-w@1wt.eu
Cc: Ian Molton <spyro@f2s.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/arch/arm/include/asm/floppy.h b/arch/arm/include/asm/floppy.h
index f4fe4d0..4655652 100644 (file)
--- a/arch/arm/include/asm/floppy.h
+++ b/arch/arm/include/asm/floppy.h
@@ -8,9 +8,6 @@
  */
 #ifndef __ASM_ARM_FLOPPY_H
 #define __ASM_ARM_FLOPPY_H
-#if 0
-#include <mach/floppy.h>
-#endif
 
 #define fd_outb(val,port)                      \
        do {                                    \
@@ -69,54 +66,6 @@ do {                                                                         \
        outb(new_dor, FD_DOR);                                                  \
 } while (0)
 
-/*
- * Someday, we'll automatically detect which drives are present...
- */
-static inline void fd_scandrives (void)
-{
-#if 0
-       int floppy, drive_count;
-
-       fd_disable_irq();
-       raw_cmd = &default_raw_cmd;
-       raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_SEEK;
-       raw_cmd->track = 0;
-       raw_cmd->rate = ?;
-       drive_count = 0;
-       for (floppy = 0; floppy < 4; floppy ++) {
-               current_drive = drive_count;
-               /*
-                * Turn on floppy motor
-                */
-               if (start_motor(redo_fd_request))
-                       continue;
-               /*
-                * Set up FDC
-                */
-               fdc_specify();
-               /*
-                * Tell FDC to recalibrate
-                */
-               output_byte(FD_RECALIBRATE);
-               LAST_OUT(UNIT(floppy));
-               /* wait for command to complete */
-               if (!successful) {
-                       int i;
-                       for (i = drive_count; i < 3; i--)
-                               floppy_selects[fdc][i] = floppy_selects[fdc][i + 1];
-                       floppy_selects[fdc][3] = 0;
-                       floppy -= 1;
-               } else
-                       drive_count++;
-       }
-#else
-       floppy_selects[0][0] = 0x10;
-       floppy_selects[0][1] = 0x21;
-       floppy_selects[0][2] = 0x23;
-       floppy_selects[0][3] = 0x33;
-#endif
-}
-
 #define FDC1 (0x3f0)
 
 #define FLOPPY0_TYPE 4