mac80211: rt2x00: import upstream changes and rebase our patches

[openwrt/staging/lynxis.git] / package / kernel / mac80211 / patches / 020-07-rt2500usb-don-t-mark-register-accesses-as-inline.patch

diff --git a/package/kernel/mac80211/patches/020-07-rt2500usb-don-t-mark-register-accesses-as-inline.patch b/package/kernel/mac80211/patches/020-07-rt2500usb-don-t-mark-register-accesses-as-inline.patch
new file mode 100644 (file)
index 0000000..a82886d
--- /dev/null
+++ b/package/kernel/mac80211/patches/020-07-rt2500usb-don-t-mark-register-accesses-as-inline.patch
@@ -0,0 +1,84 @@
+From 7272416609126e8910b7f0d0e3dba008aa87830c Mon Sep 17 00:00:00 2001
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Tue, 14 Feb 2017 22:28:33 +0100
+Subject: [PATCH 07/19] rt2500usb: don't mark register accesses as inline
+
+When CONFIG_KASAN is set, we get a rather large stack here:
+
+drivers/net/wireless/ralink/rt2x00/rt2500usb.c: In function 'rt2500usb_set_device_state':
+drivers/net/wireless/ralink/rt2x00/rt2500usb.c:1074:1: error: the frame size of 3032 bytes is larger than 100 bytes [-Werror=frame-larger-than=]
+
+If we don't force those functions to be inline, the compiler can figure this
+out better itself and not inline the functions when doing so would be harmful,
+reducing the stack size to a merge 256 bytes.
+
+Note that there is another problem that manifests in this driver, as a result
+of the typecheck() macro causing even larger stack frames.
+
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/ralink/rt2x00/rt2500usb.c | 19 +++++--------------
+ 1 file changed, 5 insertions(+), 14 deletions(-)
+
+diff --git a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
+index 62357465fe29..0d2670a56c4c 100644
+--- a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
++++ b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
+@@ -55,7 +55,7 @@ MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
+  * If the csr_mutex is already held then the _lock variants must
+  * be used instead.
+  */
+-static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
++static void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
+                                          const unsigned int offset,
+                                          u16 *value)
+ {
+@@ -66,7 +66,7 @@ static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
+       *value = le16_to_cpu(reg);
+ }
+ 
+-static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
++static void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
+                                               const unsigned int offset,
+                                               u16 *value)
+ {
+@@ -77,16 +77,7 @@ static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
+       *value = le16_to_cpu(reg);
+ }
+ 
+-static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
+-                                              const unsigned int offset,
+-                                              void *value, const u16 length)
+-{
+-      rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
+-                                    USB_VENDOR_REQUEST_IN, offset,
+-                                    value, length);
+-}
+-
+-static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
++static void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
+                                           const unsigned int offset,
+                                           u16 value)
+ {
+@@ -96,7 +87,7 @@ static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
+                                     &reg, sizeof(reg));
+ }
+ 
+-static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
++static void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
+                                                const unsigned int offset,
+                                                u16 value)
+ {
+@@ -106,7 +97,7 @@ static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
+                                      &reg, sizeof(reg), REGISTER_TIMEOUT);
+ }
+ 
+-static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
++static void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
+                                                const unsigned int offset,
+                                                void *value, const u16 length)
+ {
+-- 
+2.12.1
+