diff options
| author | Willy Tarreau <w@1wt.eu> | 2020-03-01 20:55:54 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-16 08:26:58 -0600 |
| commit | e2032464fe189c33005a6296fa67c47d2fea4d05 (patch) | |
| tree | 680f1d6330335d05a7cda5489476e42342d2c01e /drivers/block | |
| parent | ac7018614dd958c68ffbb67e8eb6826e1533b96e (diff) | |
| download | linux-e2032464fe189c33005a6296fa67c47d2fea4d05.tar.bz2 | |
floppy: separate the FDC's base address from its registers
FDC registers FD_STATUS, FD_DATA, FD_DOR, FD_DIR and FD_DCR used to be
defined relative to FD_IOPORT, which is the FDC's base address, itself
a macro depending on the "fdc" local or global variable.
This patch changes this so that the register macros above now only
reference the address offset, and that the FDC's address is explicitly
passed in each call to fd_inb() and fd_outb(), thus removing the macro.
With this change there is no more implicit usage of the local/global
"fdc" variable.
One place in the ARM code used to check if the port was equal to FD_DOR,
this was changed to testing the register by applying a mask to the port,
as was already done in the sparc code.
There are still occurrences of fd_inb() and fd_outb() in the PARISC
code and these ones remain unaffected since they already used to work
with a base address and a register offset.
The sparc, m68k and parisc code could now be slightly cleaned up to
benefit from the macro definitions above instead of the equivalent
hard-coded values.
Link: https://lore.kernel.org/r/20200301195555.11154-6-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 'drivers/block')
| -rw-r--r-- | drivers/block/floppy.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 250a451048ac..4e43a7ef5184 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -171,7 +171,6 @@ static int print_unex = 1; #include <linux/kernel.h> #include <linux/timer.h> #include <linux/workqueue.h> -#define FDPATCHES #include <linux/fdreg.h> #include <linux/fd.h> #include <linux/hdreg.h> @@ -594,14 +593,14 @@ static unsigned char fsector_t; /* sector in track */ static unsigned char in_sector_offset; /* offset within physical sector, * expressed in units of 512 bytes */ -static inline unsigned char fdc_inb(int fdc, unsigned long addr) +static inline unsigned char fdc_inb(int fdc, int reg) { - return fd_inb(addr); + return fd_inb(fdc_state[fdc].address + reg); } -static inline void fdc_outb(unsigned char value, int fdc, unsigned long addr) +static inline void fdc_outb(unsigned char value, int fdc, int reg) { - fd_outb(value, addr); + fd_outb(value, fdc_state[fdc].address + reg); } static inline bool drive_no_geom(int drive) |