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>
---
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 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
--
2.51.0