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ath10k: rework posting pci rx buffers

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It was possible on a host system running low on
memory to end up with no rx buffers on pci pipes.

This makes the driver more robust as it won't fail
to start if it can't allocate all rx buffers right
away. If it is fatal then upper layers will notice
trouble anyway.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior
2014-08-22 14:33:14 +02:00
committed by Kalle Valo
parent 5c771e7454
commit 728f95eef5
4 changed files with 163 additions and 164 deletions
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2
drivers/net/wireless/ath/ath10k/pci.h
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@@ -181,6 +181,7 @@ struct ath10k_pci {
/* Map CE id to ce_state */
struct ath10k_ce_pipe ce_states[CE_COUNT_MAX];
struct timer_list rx_post_retry;
};
static inline struct ath10k_pci *ath10k_pci_priv(struct ath10k *ar)
@@ -188,6 +189,7 @@ static inline struct ath10k_pci *ath10k_pci_priv(struct ath10k *ar)
return (struct ath10k_pci *)ar->drv_priv;
}
#define ATH10K_PCI_RX_POST_RETRY_MS 50
#define ATH_PCI_RESET_WAIT_MAX 10 /* ms */
#define PCIE_WAKE_TIMEOUT 5000 /* 5ms */