Messages in this thread Patch in this message | | | From | "Henrik Rydberg" <> | Date | Mon, 17 Sep 2012 20:49:54 +0200 | Subject | Re: [PATCH] applesmc: Bump max wait and rearrange udelay |
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On Mon, Sep 17, 2012 at 02:06:05PM -0400, Parag Warudkar wrote: > > > On Mon, 17 Sep 2012, Henrik Rydberg wrote: > > > The current patch does exactly the same sleeps, the only difference is > > that the test is also done before the first sleep. Thus, the increased > > delay, if any, comes from the sleep range. > My understanding is that the original patch resulted in trying a > max udelay(16). The new one does usleep_range(16, 32). That's a minimum 16 > max 32 - so the fact that it stops read failures means the added delay is > present and does help.
So the question is, does this patch work equally well for you?
Henrik
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c index 2827088..8bf9011 100644 --- a/drivers/hwmon/applesmc.c +++ b/drivers/hwmon/applesmc.c @@ -56,7 +56,7 @@ /* wait up to 32 ms for a status change. */ #define APPLESMC_MIN_WAIT 0x0010 #define APPLESMC_RETRY_WAIT 0x0100 -#define APPLESMC_MAX_WAIT 0x8000 +#define APPLESMC_MAX_WAIT 0x10000 #define APPLESMC_READ_CMD 0x10 #define APPLESMC_WRITE_CMD 0x11
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