From: Hamed Abdelli <abdelli.hamed@yahoo.fr>
To: "dwmw2@infradead.org" <dwmw2@infradead.org>
Cc: "trivial@kernel.org" <trivial@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86: fix the delay when controlling brightness using hotkeys on ideapad laptops
Date: Mon, 4 Mar 2013 23:33:07 +0000 (GMT) [thread overview]
Message-ID: <1362439987.98158.YahooMailNeo@web171602.mail.ir2.yahoo.com> (raw)
Fixes the lag when reading and writing hotkeys for backlight control on ideapad laptops by minimizing the timeout.
Applies to linux-3.8.2
Thanks,
Signed-off-by: Hamed ABDELLI <abdelli.hamed@yahoo.fr>
--- linux-3.8.2/drivers/platform/x86/ideapad-laptop.c.orig 2013-03-04 23:38:09.291989270 +0100
+++ linux-3.8.2/drivers/platform/x86/ideapad-laptop.c 2013-03-04 23:38:47.272988333 +0100
@@ -90,7 +90,7 @@ MODULE_PARM_DESC(no_bt_rfkill, "No rfkil
/*
* ACPI Helpers
*/
-#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
+#define IDEAPAD_EC_TIMEOUT (1) /* in ms */
static int read_method_int(acpi_handle handle, const char *method, int *val)
{
@@ -157,7 +157,7 @@ static int read_ec_data(acpi_handle hand
if (method_vpcw(handle, 1, cmd))
return -1;
- for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
+ for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/10000+1;
time_before(jiffies, end_jiffies);) {
schedule();
if (method_vpcr(handle, 1, &val))
@@ -183,7 +183,7 @@ static int write_ec_cmd(acpi_handle hand
if (method_vpcw(handle, 1, cmd))
return -1;
- for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
+ for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/10000+1;
time_before(jiffies, end_jiffies);) {
schedule();
if (method_vpcr(handle, 1, &val))
reply other threads:[~2013-03-04 23:39 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1362439987.98158.YahooMailNeo@web171602.mail.ir2.yahoo.com \
--to=abdelli.hamed@yahoo.fr \
--cc=dwmw2@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=trivial@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®