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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>
This commit is contained in:
Arnd Bergmann 2017-02-14 22:28:33 +01:00 committed by Kalle Valo
parent 91b632803e
commit 7272416609
1 changed files with 5 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/net/wireless/ralink/rt2x00/rt2500usb.c
View File

@ -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)
{