diff options
| author | Ahmad Masri <amasri@codeaurora.org> | 2019-02-28 11:34:44 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-04-03 15:34:04 +0300 |
| commit | a061894587ef61d19e5196c601ac250cc19f406f (patch) | |
| tree | 55bce378d03f1cb909e5891b315c6d24fbc591a9 /drivers/net/wireless/ath/wil6210/wil6210.h | |
| parent | 73a7d1e34d889ee4b23ac0698bd924e5ef63969c (diff) | |
wil6210: prevent device memory access while in reset or suspend
Accessing some of the memory of the device while the device is
resetting or suspending may cause unexpected error as the HW is still
not in a stable state. Prevent this access to guarantee successful
read/write memory operations.
Signed-off-by: Ahmad Masri <amasri@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/wil6210.h')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/wil6210.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index e1b1039b13ab..c4176323aab5 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -660,7 +660,6 @@ enum { /* for wil6210_priv.status */ wil_status_suspending, /* suspend in progress */ wil_status_suspended, /* suspend completed, device is suspended */ wil_status_resuming, /* resume in progress */ - wil_status_collecting_dumps, /* crashdump collection in progress */ wil_status_last /* keep last */ }; @@ -992,6 +991,8 @@ struct wil6210_priv { struct wil_txrx_ops txrx_ops; struct mutex mutex; /* for wil6210_priv access in wil_{up|down} */ + /* for synchronizing device memory access while reset or suspend */ + struct rw_semaphore mem_lock; /* statistics */ atomic_t isr_count_rx, isr_count_tx; /* debugfs */ @@ -1176,6 +1177,8 @@ void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, size_t count); void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, size_t count); +int wil_mem_access_lock(struct wil6210_priv *wil); +void wil_mem_access_unlock(struct wil6210_priv *wil); struct wil6210_vif * wil_vif_alloc(struct wil6210_priv *wil, const char *name, |