diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/pci.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 02dc4083882d..21a32ad4c09c 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -59,6 +59,7 @@ MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)"); /* how long wait to wait for target to initialise, in ms */ #define ATH10K_PCI_TARGET_WAIT 3000 +#define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3 #define QCA988X_2_0_DEVICE_ID (0x003c) @@ -2010,6 +2011,28 @@ err: return ret; } +static int ath10k_pci_hif_power_up_warm(struct ath10k *ar) +{ + int i, ret; + + /* + * Sometime warm reset succeeds after retries. + * + * FIXME: It might be possible to tune ath10k_pci_warm_reset() to work + * at first try. + */ + for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) { + ret = __ath10k_pci_hif_power_up(ar, false); + if (ret == 0) + break; + + ath10k_warn("failed to warm reset (attempt %d out of %d): %d\n", + i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS, ret); + } + + return ret; +} + static int ath10k_pci_hif_power_up(struct ath10k *ar) { int ret; @@ -2021,10 +2044,10 @@ static int ath10k_pci_hif_power_up(struct ath10k *ar) * preferred (and safer) way to perform a device reset is through a * warm reset. * - * Warm reset doesn't always work though (notably after a firmware - * crash) so fall back to cold reset if necessary. + * Warm reset doesn't always work though so fall back to cold reset may + * be necessary. */ - ret = __ath10k_pci_hif_power_up(ar, false); + ret = ath10k_pci_hif_power_up_warm(ar); if (ret) { ath10k_warn("failed to power up target using warm reset: %d\n", ret); |