iwl3945-remove-plcp-check.patch: fix slow speed on some iwl3945

iwl3945-remove-plcp-check.patch

@@ -0,0 +1,36 @@
+commit c91d01556f52255a31575be0cb1981c92a2a5028 upstream.
+
+Patch fixes:
+https://bugzilla.redhat.com/show_bug.cgi?id=654599
+
+Many users report very low speed problem on 3945 devices,
+this patch fixes problem, but only for some of them.
+
+For unknown reason, sometimes after hw scanning, device is not able
+to receive frames at high rate. Since plcp health check may request
+hw scan to "reset radio", performance problem start to be observable
+after update kernel to .35, where plcp check was introduced.
+
+Bug reporter confirmed that removing plcp check fixed problem for him.
+
+Reported-and-tested-by: SilvioTO <silviotoya@yahoo.it>
+Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
+Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
+---
+ drivers/net/wireless/iwlwifi/iwl-3945.c |    1 -
+ 1 files changed, 0 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
+index 2a9480d..7b4fc94 100644
+--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
++++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
+@@ -2837,7 +2837,6 @@ static struct iwl_lib_ops iwl3945_lib = {
+ 	.config_ap = iwl3945_config_ap,
+ 	.manage_ibss_station = iwl3945_manage_ibss_station,
+ 	.recover_from_tx_stall = iwl_bg_monitor_recover,
+-	.check_plcp_health = iwl3945_good_plcp_health,
+ 
+ 	.debugfs_ops = {
+ 		.rx_stats_read = iwl3945_ucode_rx_stats_read,
+-- 
+

kernel.spec

@@ -838,6 +838,9 @@ Patch13707: kvm-mmu-fix-32-bit-legacy-paging-with-npt.patch
 # rhbz#676860
 Patch13708: hid-force-feedback-support-for-logitech-rumblepad-gamepad.patch
 
+# rhbz#654599
+Patch13709: iwl3945-remove-plcp-check.patch
+
 %endif
 
 BuildRoot: %{_tmppath}/kernel-%{KVERREL}-root
@@ -1581,6 +1584,9 @@ ApplyPatch kvm-mmu-fix-32-bit-legacy-paging-with-npt.patch
 # rhbz#676860
 ApplyPatch hid-force-feedback-support-for-logitech-rumblepad-gamepad.patch
 
+# rhbz#654599
+ApplyPatch iwl3945-remove-plcp-check.patch
+
 # END OF PATCH APPLICATIONS
 
 %endif
@@ -2167,6 +2173,10 @@ fi
 # and build.
 
 %changelog
+* Thu Feb 24 2011 Chuck Ebbert <cebbert@redhat.com>
+- iwl3945-remove-plcp-check.patch: fix slow speed on some iwl3945
+  (#654599)
+
 * Wed Feb 16 2011 Chuck Ebbert <cebbert@redhat.com>
 - Add support for additional Logitech Rumblepad model (#676577)