diff options
| author | Juergen Gross <jgross@suse.com> | 2025-11-26 17:20:15 +0100 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2025-11-26 09:03:56 -0800 |
| commit | 8ac2a19d7063231348da8d485fb7564ca120ddcc (patch) | |
| tree | 863345a74fbba39996d3c6de9eb2ddc42988d68d | |
| parent | 2f88425ef590b7fcc2324334b342e048edc144a9 (diff) | |
hwmon/lm78: Drop REALLY_SLOW_IO setting
In lm78_isa_found() there is REALLY_SLOW_IO defined around some port
accesses, probably in order to wait between multiple accesses.
Unfortunately this isn't making any difference compared to not having
this define since more than a decade, as REALLY_SLOW_IO needs to be
defined while "#include <asm/io.h>" is called to have an effect.
As there seem not to be any outstanding issues in spite of this having
no effect, just drop the "#define" and add a remark to the related
comment.
Signed-off-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20251126162018.5676-3-jgross@suse.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| -rw-r--r-- | drivers/hwmon/lm78.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c index 8b53bb312069..9378a47bf5af 100644 --- a/drivers/hwmon/lm78.c +++ b/drivers/hwmon/lm78.c @@ -843,17 +843,18 @@ static int __init lm78_isa_found(unsigned short address) } } -#define REALLY_SLOW_IO /* * We need the timeouts for at least some LM78-like * chips. But only if we read 'undefined' registers. + * There used to be a "#define REALLY_SLOW_IO" to enforce that, but + * this has been without any effect since more than a decade, so it + * has been dropped. */ val = inb_p(address + 1); if (inb_p(address + 2) != val || inb_p(address + 3) != val || inb_p(address + 7) != val) goto release; -#undef REALLY_SLOW_IO /* * We should be able to change the 7 LSB of the address port. The |