From 8ac2a19d7063231348da8d485fb7564ca120ddcc Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Wed, 26 Nov 2025 17:20:15 +0100 Subject: [PATCH] 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 " 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 Link: https://lore.kernel.org/r/20251126162018.5676-3-jgross@suse.com Signed-off-by: Guenter Roeck --- drivers/hwmon/lm78.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c index 8b53bb3120693..9378a47bf5afa 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 -- 2.47.3