diff options
| author | Kumar Amit Mehta <gmate.amit@gmail.com> | 2013-02-18 15:37:44 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-02-19 00:30:40 +0400 |
| commit | 488ec878034eccb852267b0e27ce9d511f75c587 (patch) | |
| tree | 4626543a0b094b82e5d5fc34c9eb14f96fc2a76b /drivers | |
| parent | bc6b89237acb3dee6af6e64e51a18255fef89cc2 (diff) | |
| download | linux-488ec878034eccb852267b0e27ce9d511f75c587.tar.xz | |
net: wireless: orinoco: orinoco_usb.c: fix DMA buffers on stack
This patch fixes an instance of DMA buffer on stack(being passed to
usb_control_msg) for the wireless USB version of the Agere Orinoco card driver.
It also fixes the missing audit for the return value of firmware download
routine. Found using smatch.
Signed-off-by: Kumar Amit Mehta <gmate.amit@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/orinoco/orinoco_usb.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/orinoco/orinoco_usb.c b/drivers/net/wireless/orinoco/orinoco_usb.c index 01624dcaf73e..7744f42de1ea 100644 --- a/drivers/net/wireless/orinoco/orinoco_usb.c +++ b/drivers/net/wireless/orinoco/orinoco_usb.c @@ -804,10 +804,15 @@ static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset) static int ezusb_firmware_download(struct ezusb_priv *upriv, struct ez_usb_fw *fw) { - u8 fw_buffer[FW_BUF_SIZE]; + u8 *fw_buffer; int retval, addr; int variant_offset; + fw_buffer = kmalloc(FW_BUF_SIZE, GFP_KERNEL); + if (!fw_buffer) { + printk(KERN_ERR PFX "Out of memory for firmware buffer.\n"); + return -ENOMEM; + } /* * This byte is 1 and should be replaced with 0. The offset is * 0x10AD in version 0.0.6. The byte in question should follow @@ -859,6 +864,7 @@ static int ezusb_firmware_download(struct ezusb_priv *upriv, printk(KERN_ERR PFX "Firmware download failed, error %d\n", retval); exit: + kfree(fw_buffer); return retval; } @@ -1681,7 +1687,8 @@ static int ezusb_probe(struct usb_interface *interface, firmware.code = fw_entry->data; } if (firmware.size && firmware.code) { - ezusb_firmware_download(upriv, &firmware); + if (ezusb_firmware_download(upriv, &firmware)) + goto error; } else { err("No firmware to download"); goto error; |