Fix ath9k build error on ARM and disable BNA

udelays above 2000 are bad.  Disable the BNA driver for the same reason
This commit is contained in:
Josh Boyer 2014-01-27 09:04:55 -05:00
parent 4d65571c6e
commit 0003f178c3
3 changed files with 99 additions and 0 deletions

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@ -0,0 +1,94 @@
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From: Sujith Manoharan <sujith@msujith.org>
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Date: Mon, 27 Jan 2014 07:20:16 +0530
To: Josh Boyer <jwboyer@fedoraproject.org>
Cc: "John W. Linville" <linville@tuxdriver.com>,
<ath9k-devel@venema.h4ckr.net>, netdev <netdev@vger.kernel.org>,
"Linux-Kernel\@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>
Subject: Re: ath9k ARM build error with v3.13-8330-g4ba9920
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Josh Boyer wrote:
> adds a udelay(10000) call to the ath9k driver. This will cause a
> build error on various ARM configs because the value passed to udelay
> is too large:
>
> ERROR: "__bad_udelay" [drivers/net/wireless/ath/ath9k/ath9k_hw.ko] undefined!
> make[1]: *** [__modpost] Error 1
> make: *** [modules] Error 2
>
> Is the 10000 microsecond udelay really required? I believe the limit
> on ARM is 2000. Perhaps something else could be done in this case?
The delay is a workaround for a HW issue. Does this patch fix the problem ?
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index fbf43c0..11eab9f 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1316,7 +1316,7 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
if (AR_SREV_9300_20_OR_LATER(ah))
udelay(50);
else if (AR_SREV_9100(ah))
- udelay(10000);
+ mdelay(10);
else
udelay(100);
@@ -2051,9 +2051,8 @@ static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
AR_RTC_FORCE_WAKE_EN);
-
if (AR_SREV_9100(ah))
- udelay(10000);
+ mdelay(10);
else
udelay(50);
Sujith

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@ -172,6 +172,7 @@ CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_NET_VENDOR_EXAR is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MELLANOX is not set
# CONFIG_NET_VENDOR_BROCADE is not set
# scsi

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@ -632,6 +632,8 @@ Patch25187: revert-fsnotify-changes.patch
#rhbz 1057529
Patch25188: 0001-usb-phy-Quiet-unable-to-find-transceiver-message.patch
Patch25189: ath9k-fix-bad-udelay.patch
# END OF PATCH DEFINITIONS
%endif
@ -1288,6 +1290,8 @@ ApplyPatch revert-fsnotify-changes.patch
# rhbz 1057529
ApplyPatch 0001-usb-phy-Quiet-unable-to-find-transceiver-message.patch
ApplyPatch ath9k-fix-bad-udelay.patch
# END OF PATCH APPLICATIONS
%endif