Hi Chris,
Chris Ball a écrit :
Hi Matthieu,
This patch didn't make it upstream. Kyungmin offered a suggestion for
fixing it -- would you like to resend an updated patch?
It seems http://marc.info/?l=linux-kernel&m=127911287108683&w=2
(http://marc.info/?a=127137055700010&r=1&w=2) is a better
Hi Matthieu,
This patch didn't make it upstream. Kyungmin offered a suggestion for
fixing it -- would you like to resend an updated patch?
(As a minor aside, I have a fairly irrational preference for
"time_after(jiffies, timeout)" over "time_is_before_jiffies(timeout)",
because the latter read
The main problem is sdhci_send_command function. it loops at while
function infinitely.
I just modify it to use udelay at there. then it's working well.
also I reduce the granularity as 1 usec instead of 10 usec (as you suggested).
it's also works.
Thank you,
Kyungmin Park
On Fri, Jun 18, 2010 a
Hi,
Thanks you for the test.
here a new version of the patch. It doesn't replace mdelay with jiffies
anymore. It changes mdelay to udelay (the granularity of 1 ms becomes 10
us).
I didn't mesure irq off latency with this patch.
Matthieu
Kyungmin Park a écrit :
Hi,
Not good news. This pat
Hi,
Not good news. This patch make a hang at probe time.
it's tested against commit 7e27d6e778cd87b6f2415515d7127eba53fe5d02
Author: Linus Torvalds
Date: Fri Jun 11 19:14:04 2010 -0700
Linux 2.6.35-rc3
Thank you,
Kyungmin Park
On Thu, Jun 17, 2010 at 6:07 PM, Matthieu CASTET
wrote:
> sd
sdhci code got tasklets (sdhci_tasklet_card and sdhci_tasklet_finish),
that does :
{
spin_lock_irqsave
if (cond) {
sdhci_reset
sdhci_reset
}
spin_unlock_irqrestore
}
sdhci_reset {
...
while (read_reg) {
if (timeout == 0)
break;
timeout--;
mdelay(1);
}
...
}
The problem is that sdhci_reset
