Commit 732bf15e authored by David S. Miller's avatar David S. Miller
Browse files

Merge tag 'master-2013-09-09' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 



John W. Linville says:

====================
This is a pull request for a few early fixes for the 3.12 stream.

Alexey Khoroshilov corrects a use-after-free issue on rtl8187 found
by the Linux Driver Verification project.

Arend van Spriel provides a brcmfmac patch to fix a build issue
reported by Randy Dunlap.

Hauke Mehrtens offers a bcma fix to properly account for the storage
width of error code values before checking them.

Solomon Peachy brings a pair of cw1200 fixes to avoid hangs in that
driver with SPI devices.  One avoids transfers in interrupt context,
the other fixes a locking issue.

Stanislaw Gruszka changes the initialization of the rt2800 driver to
avoid a freeze, addressing a bug in the Red Hat bugzilla.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 3ced8c95 f4e1a4d3

drivers/bcma/scan.c

+7 −5
Original line number Diff line number Diff line
@@ -269,6 +269,8 @@ static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 core 
	return NULL;

}



#define IS_ERR_VALUE_U32(x) ((x) >= (u32)-MAX_ERRNO)



static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,

			      struct bcma_device_id *match, int core_num,

			      struct bcma_device *core)
@@ -351,11 +353,11 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, 
	 * the main register space for the core

	 */

	tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);

	if (tmp == 0 || IS_ERR_VALUE(tmp)) {

	if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {

		/* Try again to see if it is a bridge */

		tmp = bcma_erom_get_addr_desc(bus, eromptr,

					      SCAN_ADDR_TYPE_BRIDGE, 0);

		if (tmp == 0 || IS_ERR_VALUE(tmp)) {

		if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {

			return -EILSEQ;

		} else {

			bcma_info(bus, "Bridge found\n");
@@ -369,7 +371,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, 
		for (j = 0; ; j++) {

			tmp = bcma_erom_get_addr_desc(bus, eromptr,

				SCAN_ADDR_TYPE_SLAVE, i);

			if (IS_ERR_VALUE(tmp)) {

			if (IS_ERR_VALUE_U32(tmp)) {

				/* no more entries for port _i_ */

				/* pr_debug("erom: slave port %d "

				 * "has %d descriptors\n", i, j); */
@@ -386,7 +388,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, 
		for (j = 0; ; j++) {

			tmp = bcma_erom_get_addr_desc(bus, eromptr,

				SCAN_ADDR_TYPE_MWRAP, i);

			if (IS_ERR_VALUE(tmp)) {

			if (IS_ERR_VALUE_U32(tmp)) {

				/* no more entries for port _i_ */

				/* pr_debug("erom: master wrapper %d "

				 * "has %d descriptors\n", i, j); */
@@ -404,7 +406,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, 
		for (j = 0; ; j++) {

			tmp = bcma_erom_get_addr_desc(bus, eromptr,

				SCAN_ADDR_TYPE_SWRAP, i + hack);

			if (IS_ERR_VALUE(tmp)) {

			if (IS_ERR_VALUE_U32(tmp)) {

				/* no more entries for port _i_ */

				/* pr_debug("erom: master wrapper %d "

				 * has %d descriptors\n", i, j); */

drivers/net/wireless/brcm80211/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -28,7 +28,7 @@ config BRCMFMAC 


config BRCMFMAC_SDIO

	bool "SDIO bus interface support for FullMAC driver"

	depends on MMC

	depends on (MMC = y || MMC = BRCMFMAC)

	depends on BRCMFMAC

	select FW_LOADER

	default y
@@ -39,7 +39,7 @@ config BRCMFMAC_SDIO 


config BRCMFMAC_USB

	bool "USB bus interface support for FullMAC driver"

	depends on USB

	depends on (USB = y || USB = BRCMFMAC)

	depends on BRCMFMAC

	select FW_LOADER

	---help---

drivers/net/wireless/cw1200/cw1200_spi.c

+25 −3
Original line number Diff line number Diff line
@@ -40,7 +40,9 @@ struct hwbus_priv { 
	struct cw1200_common	*core;

	const struct cw1200_platform_data_spi *pdata;

	spinlock_t		lock; /* Serialize all bus operations */

	wait_queue_head_t       wq;

	int claimed;

	int irq_disabled;

};



#define SDIO_TO_SPI_ADDR(addr) ((addr & 0x1f)>>2)
@@ -197,8 +199,11 @@ static void cw1200_spi_lock(struct hwbus_priv *self) 
{

	unsigned long flags;



	DECLARE_WAITQUEUE(wait, current);



	might_sleep();



	add_wait_queue(&self->wq, &wait);

	spin_lock_irqsave(&self->lock, flags);

	while (1) {

		set_current_state(TASK_UNINTERRUPTIBLE);
@@ -211,6 +216,7 @@ static void cw1200_spi_lock(struct hwbus_priv *self) 
	set_current_state(TASK_RUNNING);

	self->claimed = 1;

	spin_unlock_irqrestore(&self->lock, flags);

	remove_wait_queue(&self->wq, &wait);



	return;

}
@@ -222,6 +228,8 @@ static void cw1200_spi_unlock(struct hwbus_priv *self) 
	spin_lock_irqsave(&self->lock, flags);

	self->claimed = 0;

	spin_unlock_irqrestore(&self->lock, flags);

	wake_up(&self->wq);



	return;

}
@@ -230,6 +238,8 @@ static irqreturn_t cw1200_spi_irq_handler(int irq, void *dev_id) 
	struct hwbus_priv *self = dev_id;



	if (self->core) {

		disable_irq_nosync(self->func->irq);

		self->irq_disabled = 1;

		cw1200_irq_handler(self->core);

		return IRQ_HANDLED;

	} else {
@@ -263,13 +273,22 @@ exit: 


static int cw1200_spi_irq_unsubscribe(struct hwbus_priv *self)

{

	int ret = 0;



	pr_debug("SW IRQ unsubscribe\n");

	disable_irq_wake(self->func->irq);

	free_irq(self->func->irq, self);



	return ret;

	return 0;

}



static int cw1200_spi_irq_enable(struct hwbus_priv *self, int enable)

{

	/* Disables are handled by the interrupt handler */

	if (enable && self->irq_disabled) {

		enable_irq(self->func->irq);

		self->irq_disabled = 0;

	}



	return 0;

}



static int cw1200_spi_off(const struct cw1200_platform_data_spi *pdata)
@@ -349,6 +368,7 @@ static struct hwbus_ops cw1200_spi_hwbus_ops = { 
	.unlock			= cw1200_spi_unlock,

	.align_size		= cw1200_spi_align_size,

	.power_mgmt		= cw1200_spi_pm,

	.irq_enable             = cw1200_spi_irq_enable,

};



/* Probe Function to be called by SPI stack when device is discovered */
@@ -400,6 +420,8 @@ static int cw1200_spi_probe(struct spi_device *func) 


	spi_set_drvdata(func, self);



	init_waitqueue_head(&self->wq);



	status = cw1200_spi_irq_subscribe(self);



	status = cw1200_core_probe(&cw1200_spi_hwbus_ops,

drivers/net/wireless/cw1200/fwio.c

+1 −1
Original line number Diff line number Diff line
@@ -485,7 +485,7 @@ int cw1200_load_firmware(struct cw1200_common *priv) 


	/* Enable interrupt signalling */

	priv->hwbus_ops->lock(priv->hwbus_priv);

	ret = __cw1200_irq_enable(priv, 1);

	ret = __cw1200_irq_enable(priv, 2);

	priv->hwbus_ops->unlock(priv->hwbus_priv);

	if (ret < 0)

		goto unsubscribe;

drivers/net/wireless/cw1200/hwbus.h

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ struct hwbus_ops { 
	void (*unlock)(struct hwbus_priv *self);

	size_t (*align_size)(struct hwbus_priv *self, size_t size);

	int (*power_mgmt)(struct hwbus_priv *self, bool suspend);

	int (*irq_enable)(struct hwbus_priv *self, int enable);

};



#endif /* CW1200_HWBUS_H */

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