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authorIvo van Doorn <ivdoorn@gmail.com>2010-07-11 12:25:17 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-07-12 16:05:33 -0400
commit223dcc26591aa8e4a6bf623164b775b5bd89c9e1 (patch)
treec9d3da2954fe84248437434cbbc9c0d53490d22a /drivers/net/wireless/rt2x00/rt2x00link.c
parentd8147f9d9ed6abfa105234a21f05af4a4839eb80 (diff)
rt2x00: Fix vgc_level_reg handling
Currently vgc_level_reg and vgc_level are equal to eachother, while the purpose of vgc_level_reg is the value last written to the register and is remembered through link tuning resets. The vgc_level is the currently active level, which is reset during link tuning resets. The usage of these variables depends on the drivers, some drivers need both, while others need only one of the two. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00link.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00link.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00link.c b/drivers/net/wireless/rt2x00/rt2x00link.c
index 14f1d512628..9acfc5c7038 100644
--- a/drivers/net/wireless/rt2x00/rt2x00link.c
+++ b/drivers/net/wireless/rt2x00/rt2x00link.c
@@ -302,6 +302,7 @@ void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev)
void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna)
{
struct link_qual *qual = &rt2x00dev->link.qual;
+ u8 vgc_level = qual->vgc_level_reg;
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return;
@@ -318,6 +319,13 @@ void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna)
memset(qual, 0, sizeof(*qual));
/*
+ * Restore the VGC level as stored in the registers,
+ * the driver can use this to determine if the register
+ * must be updated during reset or not.
+ */
+ qual->vgc_level_reg = vgc_level;
+
+ /*
* Reset the link tuner.
*/
rt2x00dev->ops->lib->reset_tuner(rt2x00dev, qual);