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wil6210: minimize the time that mem_lock is held 

mem_lock is taken for the entire wil_reset().
Optimize this by taking mem_lock just before device is
being reset and release the lock after FW download.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Alexei Avshalom Lazar 2019-12-18 20:10:07 +02:00 committed by Kalle Valo
parent 7be3c2331d
commit d3214d4280
1 changed files with 6 additions and 4 deletions
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10
drivers/net/wireless/ath/wil6210/main.c
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@ -1654,6 +1654,8 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
/* Disable device led before reset*/
wmi_led_cfg(wil, false);
down_write(&wil->mem_lock);
/* prevent NAPI from being scheduled and prevent wmi commands */
mutex_lock(&wil->wmi_mutex);
if (test_bit(wil_status_suspending, wil->status))
@ -1702,6 +1704,7 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
if (wil->secured_boot) {
wil_err(wil, "secured boot is not supported\n");
up_write(&wil->mem_lock);
return -ENOTSUPP;
}
@ -1737,6 +1740,8 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
clear_bit(wil_status_resetting, wil->status);
up_write(&wil->mem_lock);
if (load_fw) {
wil_unmask_irq(wil);
@ -1786,6 +1791,7 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
return rc;
out:
up_write(&wil->mem_lock);
clear_bit(wil_status_resetting, wil->status);
return rc;
}
@ -1811,9 +1817,7 @@ int __wil_up(struct wil6210_priv *wil)
WARN_ON(!mutex_is_locked(&wil->mutex));
down_write(&wil->mem_lock);
rc = wil_reset(wil, true);
up_write(&wil->mem_lock);
if (rc)
return rc;
@ -1905,9 +1909,7 @@ int __wil_down(struct wil6210_priv *wil)
wil_abort_scan_all_vifs(wil, false);
mutex_unlock(&wil->vif_mutex);
down_write(&wil->mem_lock);
rc = wil_reset(wil, false);
up_write(&wil->mem_lock);
return rc;
}