package/kernel/mac80211/patches/346-brcmfmac-avoid-runtime-pm-for-sdio-host-controller.patch

   1 From: Arend van Spriel <arend@broadcom.com>
   2 Date: Wed, 18 Mar 2015 13:25:21 +0100
   3 Subject: [PATCH] brcmfmac: avoid runtime-pm for sdio host controller
   4
   5 Several host controllers supporting runtime-pm are causing issues
   6 with our sdio wireless cards because they disable the sdio interrupt
   7 upon going into runtime suspend. This patch avoids that by doing
   8 a pm_runtime_forbid() call during the probe. Tested with Sony Vaio
   9 Duo 13 which uses sdhci-acpi host controller.
  10
  11 Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
  12 Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
  13 Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
  14 Signed-off-by: Arend van Spriel <arend@broadcom.com>
  15 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  16 ---
  17
  18 --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
  19 +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
  20 @@ -29,6 +29,7 @@
  21  #include <linux/mmc/host.h>
  22  #include <linux/platform_device.h>
  23  #include <linux/platform_data/brcmfmac-sdio.h>
  24 +#include <linux/pm_runtime.h>
  25  #include <linux/suspend.h>
  26  #include <linux/errno.h>
  27  #include <linux/module.h>
  28 @@ -1006,6 +1007,7 @@ static int brcmf_sdiod_remove(struct brc
  29         sg_free_table(&sdiodev->sgtable);
  30         sdiodev->sbwad = 0;
  31
  32 +       pm_runtime_allow(sdiodev->func[1]->card->host->parent);
  33         return 0;
  34  }
  35
  36 @@ -1074,7 +1076,7 @@ static int brcmf_sdiod_probe(struct brcm
  37                 ret = -ENODEV;
  38                 goto out;
  39         }
  40 -
  41 +       pm_runtime_forbid(host->parent);
  42  out:
  43         if (ret)
  44                 brcmf_sdiod_remove(sdiodev);