Commit bc0f03ea authored by Saravanan Dhanabal's avatar Saravanan Dhanabal Committed by John W. Linville

wl1271: Fix msleep() delay while waiting for completion

After last transmission, the device goes to sleep earlier
than the configured dynamic power save timeout. If timeout
is set to 400ms, device enters into sleep mode at around
330ms since from last TX.

This patch removes the msleep(1), which causes the delay
after ELP wakeup. Replaced with udelay(10), the variation
is around 7-10ms.
Signed-off-by: default avatarSaravanan Dhanabal <ext-saravanan.dhanabal@nokia.com>
Reviewed-by: default avatarJuuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: default avatarLuciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent c1899554
...@@ -36,6 +36,8 @@ ...@@ -36,6 +36,8 @@
#include "wl1271_cmd.h" #include "wl1271_cmd.h"
#include "wl1271_event.h" #include "wl1271_event.h"
#define WL1271_CMD_POLL_COUNT 5
/* /*
* send command to firmware * send command to firmware
* *
...@@ -52,6 +54,7 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len, ...@@ -52,6 +54,7 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
u32 intr; u32 intr;
int ret = 0; int ret = 0;
u16 status; u16 status;
u16 poll_count = 0;
cmd = buf; cmd = buf;
cmd->id = cpu_to_le16(id); cmd->id = cpu_to_le16(id);
...@@ -73,7 +76,11 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len, ...@@ -73,7 +76,11 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
goto out; goto out;
} }
msleep(1); udelay(10);
poll_count++;
if (poll_count == WL1271_CMD_POLL_COUNT)
wl1271_info("cmd polling took over %d cycles",
poll_count);
intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
} }
......
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