diff options
Diffstat (limited to 'package/kernel/mac80211/patches/020-07-rt2500usb-don-t-mark-register-accesses-as-inline.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/020-07-rt2500usb-don-t-mark-register-accesses-as-inline.patch | 84 |
1 files changed, 84 insertions, 0 deletions
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 index 0000000000..a82886d234 --- /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, + ®, 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, + ®, 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 + |