diff options
| author | Willy Tarreau <w@1wt.eu> | 2020-03-01 20:55:51 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-16 08:26:58 -0600 |
| commit | 336eae37338590ea259954546a44a5f524256b6e (patch) | |
| tree | dfeb648a9daf3fb8c1939da87ccb759327f1d9bd /arch/arm/include | |
| parent | 3c6051afa3d4e22273e7eed11186513a12554515 (diff) | |
floppy: remove incomplete support for second FDC from ARM code
The ARM code was written with the apparent hope to one day support
a second FDC except that the code was incomplete and only touches
the first one, which is also reflected by N_FDC==1. However this
made its fd_outb() macro artificially depend on the global or local
"fdc" variable.
Let's get rid of this and make it explicit it doesn't rely on this
variable anymore.
Link: https://lore.kernel.org/r/20200301195555.11154-3-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>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/floppy.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/arm/include/asm/floppy.h b/arch/arm/include/asm/floppy.h index 465565274345..7e58979f02bf 100644 --- a/arch/arm/include/asm/floppy.h +++ b/arch/arm/include/asm/floppy.h @@ -50,17 +50,13 @@ static inline int fd_dma_setup(void *data, unsigned int length, * to a non-zero track, and then restoring it to track 0. If an error occurs, * then there is no floppy drive present. [to be put back in again] */ -static unsigned char floppy_selects[2][4] = -{ - { 0x10, 0x21, 0x23, 0x33 }, - { 0x10, 0x21, 0x23, 0x33 } -}; +static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 }; #define fd_setdor(dor) \ do { \ int new_dor = (dor); \ if (new_dor & 0xf0) \ - new_dor = (new_dor & 0x0c) | floppy_selects[fdc][new_dor & 3]; \ + new_dor = (new_dor & 0x0c) | floppy_selects[new_dor & 3]; \ else \ new_dor &= 0x0c; \ outb(new_dor, FD_DOR); \ @@ -84,9 +80,7 @@ do { \ */ static void driveswap(int *ints, int dummy, int dummy2) { - floppy_selects[0][0] ^= floppy_selects[0][1]; - floppy_selects[0][1] ^= floppy_selects[0][0]; - floppy_selects[0][0] ^= floppy_selects[0][1]; + swap(floppy_selects[0], floppy_selects[1]); } #define EXTRA_FLOPPY_PARAMS ,{ "driveswap", &driveswap, NULL, 0, 0 } |