diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2018-04-11 20:50:14 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-04-16 21:49:35 -0600 |
| commit | 56a1c5ee54f69dd767fb61d301883dc919ddc259 (patch) | |
| tree | 43a16181138097f465de8aee19a8cd31a5e92b54 /drivers/block/swim3.c | |
| parent | 8e2ab5a4efaac77fb93e5b5b109d0b3976fdd3a0 (diff) | |
| download | lwn-56a1c5ee54f69dd767fb61d301883dc919ddc259.tar.gz lwn-56a1c5ee54f69dd767fb61d301883dc919ddc259.zip | |
block/swim: Rename macros to avoid inconsistent inverted logic
The Sony drive status bits use active-low logic. The swim_readbit()
function converts that to 'C' logic for readability. Hence, the
sense of the names of the status bit macros should not be inverted.
Mostly they are correct. However, the TWOMEG_DRIVE, MFM_MODE and
TWOMEG_MEDIA macros have inverted sense (like MkLinux). Fix this
inconsistency and make the following patches less confusing.
The same problem affects swim3.c so fix that too.
No functional change.
The FDHD drive status bits are documented in sonydriv.cpp from MAME
and in swimiii.h from MkLinux.
Cc: Laurent Vivier <lvivier@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: stable@vger.kernel.org # v4.14+
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/swim3.c')
| -rw-r--r-- | drivers/block/swim3.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index af51015d056e..469541c1e51e 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -148,7 +148,7 @@ struct swim3 { #define MOTOR_ON 2 #define RELAX 3 /* also eject in progress */ #define READ_DATA_0 4 -#define TWOMEG_DRIVE 5 +#define ONEMEG_DRIVE 5 #define SINGLE_SIDED 6 /* drive or diskette is 4MB type? */ #define DRIVE_PRESENT 7 #define DISK_IN 8 @@ -156,9 +156,9 @@ struct swim3 { #define TRACK_ZERO 10 #define TACHO 11 #define READ_DATA_1 12 -#define MFM_MODE 13 +#define GCR_MODE 13 #define SEEK_COMPLETE 14 -#define ONEMEG_MEDIA 15 +#define TWOMEG_MEDIA 15 /* Definitions of values used in writing and formatting */ #define DATA_ESCAPE 0x99 |