Commit f154988a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 's390-5.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 

Pull s390 fixes from Vasily Gorbik:

 - Fix virtio-ccw DMA regression

 - Fix compiler warnings in uaccess

* tag 's390-5.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/uaccess: avoid (false positive) compiler warnings
  s390/cio: fix virtio-ccw DMA without PV
parents 1c0cc5f1 062795fc

arch/s390/include/asm/uaccess.h

+2 −2
Original line number Diff line number Diff line
@@ -83,7 +83,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n); 
	__rc;							\

})



static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size)

static __always_inline int __put_user_fn(void *x, void __user *ptr, unsigned long size)

{

	unsigned long spec = 0x010000UL;

	int rc;
@@ -113,7 +113,7 @@ static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) 
	return rc;

}



static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size)

static __always_inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size)

{

	unsigned long spec = 0x01UL;

	int rc;

drivers/s390/cio/cio.h

+1 −0
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ struct subchannel { 
	enum sch_todo todo;

	struct work_struct todo_work;

	struct schib_config config;

	u64 dma_mask;

	char *driver_override; /* Driver name to force a match */

} __attribute__ ((aligned(8)));

drivers/s390/cio/css.c

+6 −1
Original line number Diff line number Diff line
@@ -232,7 +232,12 @@ struct subchannel *css_alloc_subchannel(struct subchannel_id schid, 
	 * belong to a subchannel need to fit 31 bit width (e.g. ccw).

	 */

	sch->dev.coherent_dma_mask = DMA_BIT_MASK(31);

	sch->dev.dma_mask = &sch->dev.coherent_dma_mask;

	/*

	 * But we don't have such restrictions imposed on the stuff that

	 * is handled by the streaming API.

	 */

	sch->dma_mask = DMA_BIT_MASK(64);

	sch->dev.dma_mask = &sch->dma_mask;

	return sch;



err:

drivers/s390/cio/device.c

+1 −1
Original line number Diff line number Diff line
@@ -710,7 +710,7 @@ static struct ccw_device * io_subchannel_allocate_dev(struct subchannel *sch) 
	if (!cdev->private)

		goto err_priv;

	cdev->dev.coherent_dma_mask = sch->dev.coherent_dma_mask;

	cdev->dev.dma_mask = &cdev->dev.coherent_dma_mask;

	cdev->dev.dma_mask = sch->dev.dma_mask;

	dma_pool = cio_gp_dma_create(&cdev->dev, 1);

	if (!dma_pool)

		goto err_dma_pool;

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