mac80211: backport "brcmfmac: cleanup and some rework" from 4.17

It was described by Arend as:

> This series is intended for 4.17 and includes following:
>
>  * rework bus layer attach code.
>  * remove duplicate variable declaration.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 0da9303e5b444e2c98c24719c48c09f4c976c5a7)

1 files changed, 126 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/325-v4.17-0008-brcmfmac-remove-duplicate-pointer-variable-from-brcm.patch b/package/kernel/mac80211/patches/325-v4.17-0008-brcmfmac-remove-duplicate-pointer-variable-from-brcm.patch
new file mode 100644
index 0000000..39fba21
--- /dev/null
+++ b/package/kernel/mac80211/patches/325-v4.17-0008-brcmfmac-remove-duplicate-pointer-variable-from-brcm.patch
@@ -0,0 +1,126 @@
+From 2d6edad4b2da1991f74e7b02053eeb4a043b887f Mon Sep 17 00:00:00 2001
+From: Arend Van Spriel <arend.vanspriel@broadcom.com>
+Date: Tue, 20 Feb 2018 00:14:25 +0100
+Subject: [PATCH] brcmfmac: remove duplicate pointer variable from
+ brcmf_sdio_firmware_callback()
+
+In brcmf_sdio_firmware_callback() two pointer variables were used
+pointing to the same construct. Get rid of sdiodev variable.
+
+Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ .../wireless/broadcom/brcm80211/brcmfmac/sdio.c    | 37 +++++++++++-----------
+ 1 file changed, 18 insertions(+), 19 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+@@ -4039,9 +4039,8 @@ static void brcmf_sdio_firmware_callback
+ 					 void *nvram, u32 nvram_len)
+ {
+ 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+-	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+-	struct brcmf_sdio *bus = sdiodev->bus;
+-	struct brcmf_sdio_dev *sdiod = bus->sdiodev;
++	struct brcmf_sdio_dev *sdiod = bus_if->bus_priv.sdio;
++	struct brcmf_sdio *bus = sdiod->bus;
+ 	struct brcmf_core *core = bus->sdio_core;
+ 	u8 saveclk;
+ 
+@@ -4061,7 +4060,7 @@ static void brcmf_sdio_firmware_callback
+ 	bus->sdcnt.tickcnt = 0;
+ 	brcmf_sdio_wd_timer(bus, true);
+ 
+-	sdio_claim_host(sdiodev->func1);
++	sdio_claim_host(sdiod->func1);
+ 
+ 	/* Make sure backplane clock is on, needed to generate F2 interrupt */
+ 	brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
+@@ -4069,9 +4068,9 @@ static void brcmf_sdio_firmware_callback
+ 		goto release;
+ 
+ 	/* Force clocks on backplane to be sure F2 interrupt propagates */
+-	saveclk = brcmf_sdiod_readb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err);
++	saveclk = brcmf_sdiod_readb(sdiod, SBSDIO_FUNC1_CHIPCLKCSR, &err);
+ 	if (!err) {
+-		brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
++		brcmf_sdiod_writeb(sdiod, SBSDIO_FUNC1_CHIPCLKCSR,
+ 				   (saveclk | SBSDIO_FORCE_HT), &err);
+ 	}
+ 	if (err) {
+@@ -4083,7 +4082,7 @@ static void brcmf_sdio_firmware_callback
+ 	brcmf_sdiod_writel(sdiod, core->base + SD_REG(tosbmailboxdata),
+ 			   SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, NULL);
+ 
+-	err = sdio_enable_func(sdiodev->func2);
++	err = sdio_enable_func(sdiod->func2);
+ 
+ 	brcmf_dbg(INFO, "enable F2: err=%d\n", err);
+ 
+@@ -4095,10 +4094,10 @@ static void brcmf_sdio_firmware_callback
+ 				   bus->hostintmask, NULL);
+ 
+ 
+-		brcmf_sdiod_writeb(sdiodev, SBSDIO_WATERMARK, 8, &err);
++		brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK, 8, &err);
+ 	} else {
+ 		/* Disable F2 again */
+-		sdio_disable_func(sdiodev->func2);
++		sdio_disable_func(sdiod->func2);
+ 		goto release;
+ 	}
+ 
+@@ -4106,7 +4105,7 @@ static void brcmf_sdio_firmware_callback
+ 		brcmf_sdio_sr_init(bus);
+ 	} else {
+ 		/* Restore previous clock setting */
+-		brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
++		brcmf_sdiod_writeb(sdiod, SBSDIO_FUNC1_CHIPCLKCSR,
+ 				   saveclk, &err);
+ 	}
+ 
+@@ -4114,7 +4113,7 @@ static void brcmf_sdio_firmware_callback
+ 		/* Allow full data communication using DPC from now on. */
+ 		brcmf_sdiod_change_state(bus->sdiodev, BRCMF_SDIOD_DATA);
+ 
+-		err = brcmf_sdiod_intr_register(sdiodev);
++		err = brcmf_sdiod_intr_register(sdiod);
+ 		if (err != 0)
+ 			brcmf_err("intr register failed:%d\n", err);
+ 	}
+@@ -4123,16 +4122,16 @@ static void brcmf_sdio_firmware_callback
+ 	if (err != 0)
+ 		brcmf_sdio_clkctl(bus, CLK_NONE, false);
+ 
+-	sdio_release_host(sdiodev->func1);
++	sdio_release_host(sdiod->func1);
+ 
+ 	/* Assign bus interface call back */
+-	sdiodev->bus_if->dev = sdiodev->dev;
+-	sdiodev->bus_if->ops = &brcmf_sdio_bus_ops;
+-	sdiodev->bus_if->chip = bus->ci->chip;
+-	sdiodev->bus_if->chiprev = bus->ci->chiprev;
++	sdiod->bus_if->dev = sdiod->dev;
++	sdiod->bus_if->ops = &brcmf_sdio_bus_ops;
++	sdiod->bus_if->chip = bus->ci->chip;
++	sdiod->bus_if->chiprev = bus->ci->chiprev;
+ 
+ 	/* Attach to the common layer, reserve hdr space */
+-	err = brcmf_attach(sdiodev->dev, sdiodev->settings);
++	err = brcmf_attach(sdiod->dev, sdiod->settings);
+ 	if (err != 0) {
+ 		brcmf_err("brcmf_attach failed\n");
+ 		goto fail;
+@@ -4142,10 +4141,10 @@ static void brcmf_sdio_firmware_callback
+ 	return;
+ 
+ release:
+-	sdio_release_host(sdiodev->func1);
++	sdio_release_host(sdiod->func1);
+ fail:
+ 	brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
+-	device_release_driver(&sdiodev->func2->dev);
++	device_release_driver(&sdiod->func2->dev);
+ 	device_release_driver(dev);
+ }
+