[PATCH] rt2500usb: don't mark register accesses as inline
From: Arnd Bergmann <arnd@arndb.de>
Date: 2017-02-14 21:29:01
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> --- 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) {
--
2.9.0