xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rtlwifi: rtl8192ce: Fix kernel crashes due to missing callback entry

Browse Source 
In the major update of the rtlwifi-family of drivers, one of the callback entries
was missed, which leads to memory corruption. Unfortunately, this corruption
never caused a kernel oops, but showed up in other parts of the system.
This patch is one of three needed to fix the kernel regression reported at
https://bugzilla.kernel.org/show_bug.cgi?id=88951.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-by: Catalin Iacob <iacobcatalin@gmail.com>
Tested-by: Catalin Iacob <iacobcatalin@gmail.com>
Cc: Catalin Iacob <iacobcatalin@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger
2014-11-28 10:41:15 -06:00
committed by John W. Linville
parent 99a82f734a
commit f892914c03
3 changed files with 22 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
View File

@@ -739,6 +739,23 @@ u32 rtl92ce_get_desc(u8 *p_desc, bool istx, u8 desc_name)
return ret;
}
bool rtl92ce_is_tx_desc_closed(struct ieee80211_hw *hw,
u8 hw_queue, u16 index)
{
struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
u8 *entry = (u8 *)(&ring->desc[ring->idx]);
u8 own = (u8)rtl92ce_get_desc(entry, true, HW_DESC_OWN);
/*beacon packet will only use the first
*descriptor defautly,and the own may not
*be cleared by the hardware
*/
if (own)
return false;
return true;
}
void rtl92ce_tx_polling(struct ieee80211_hw *hw, u8 hw_queue)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);