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68 lines
2.2 KiB
68 lines
2.2 KiB
From: Arend van Spriel <arend@broadcom.com>
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Date: Tue, 14 Apr 2015 20:10:30 +0200
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Subject: [PATCH] brcmfmac: fix sdio suspend and resume
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commit 330b4e4be937 ("brcmfmac: Add wowl support for SDIO devices.")
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changed the behaviour by removing the MMC_PM_KEEP_POWER flag for
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non-wowl scenario, which needs to be restored. Another necessary
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change is to mark the card as being non-removable. With this in place
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the suspend resume test passes successfully doing:
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# echo devices > /sys/power/pm_test
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# echo mem > /sys/power/state
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Note that power may still be switched off when system is going
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in S3 state.
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Reported-by: Fu, Zhonghui <<zhonghui.fu@linux.intel.com>
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Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
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Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
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Signed-off-by: Arend van Spriel <arend@broadcom.com>
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---
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--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
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+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
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@@ -1011,6 +1011,14 @@ static int brcmf_sdiod_remove(struct brc
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return 0;
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}
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+static void brcmf_sdiod_host_fixup(struct mmc_host *host)
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+{
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+ /* runtime-pm powers off the device */
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+ pm_runtime_forbid(host->parent);
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+ /* avoid removal detection upon resume */
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+ host->caps |= MMC_CAP_NONREMOVABLE;
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+}
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+
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static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
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{
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struct sdio_func *func;
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@@ -1076,7 +1084,7 @@ static int brcmf_sdiod_probe(struct brcm
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ret = -ENODEV;
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goto out;
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}
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- pm_runtime_forbid(host->parent);
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+ brcmf_sdiod_host_fixup(host);
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out:
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if (ret)
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brcmf_sdiod_remove(sdiodev);
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@@ -1246,15 +1254,15 @@ static int brcmf_ops_sdio_suspend(struct
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brcmf_sdiod_freezer_on(sdiodev);
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brcmf_sdio_wd_timer(sdiodev->bus, 0);
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+ sdio_flags = MMC_PM_KEEP_POWER;
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if (sdiodev->wowl_enabled) {
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- sdio_flags = MMC_PM_KEEP_POWER;
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if (sdiodev->pdata->oob_irq_supported)
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enable_irq_wake(sdiodev->pdata->oob_irq_nr);
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else
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- sdio_flags = MMC_PM_WAKE_SDIO_IRQ;
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- if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
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- brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
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+ sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
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}
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+ if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
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+ brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
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return 0;
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}
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