diff options
| author | Lior David <liord@codeaurora.org> | 2018-01-21 12:14:41 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-01-25 08:32:23 +0300 |
| commit | 70bcc658c0b13d9e89033e1981daf0f431f39522 (patch) | |
| tree | 8614a39e73bab6381a2a212fcbe732f5e7bc9a3c /drivers/net/wireless/ath/wil6210/wmi.c | |
| parent | b8e13b87b15d2dde8c61ad7de5626d07a9d4da01 (diff) | |
| download | linux-70bcc658c0b13d9e89033e1981daf0f431f39522.tar.xz | |
wil6210: fix random failure to bring network interface up
Currently when we want to bring the interface up, we first
reset the device which causes the boot loader to run. Then
we halt the device CPU, load FW image and resume the device
CPU.
There are some boot loader versions which perform redundant
memory accesses even when idle. Halting the device CPU
while boot loader access memory can cause the device memory
controller to get stuck, the FW will fail to load and the
network interface will not come up.
For such boot loaders implement a workaround where we freeze
the boot loader before halting the device CPU, so it will not
perform any memory accesses.
Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/wmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/wmi.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c index 69da3c256ad0..43c5803a35af 100644 --- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -185,6 +185,24 @@ static u32 wmi_addr_remap(u32 x) } /** + * find fw_mapping entry by section name + * @section - section name + * + * Return pointer to section or NULL if not found + */ +struct fw_map *wil_find_fw_mapping(const char *section) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) + if (fw_mapping[i].name && + !strcmp(section, fw_mapping[i].name)) + return &fw_mapping[i]; + + return NULL; +} + +/** * Check address validity for WMI buffer; remap if needed * @ptr - internal (linker) fw/ucode address * @size - if non zero, validate the block does not |