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Commit e433b656 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'char-misc-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 

Pull char/misc driver fixes from Greg KH:
 "Here are some char and misc driver fixes for reported issues.

  One parport patch is reverted as it was incorrect, thanks to testing
  by the 0-day bot"

* tag 'char-misc-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  parport: Revert "parport: fix memory leak"
  mei: prevent unloading mei hw modules while the device is opened.
  misc: mic: scif bug fix for vmalloc_to_page crash
  parport: fix freeing freed memory
  parport: fix memory leak
  parport: fix error handling
parents 763e326c 4e5a74f1

drivers/misc/mei/main.c

+1 −1
Original line number Diff line number Diff line
@@ -682,7 +682,7 @@ int mei_register(struct mei_device *dev, struct device *parent) 
	/* Fill in the data structures */

	devno = MKDEV(MAJOR(mei_devt), dev->minor);

	cdev_init(&dev->cdev, &mei_fops);

	dev->cdev.owner = mei_fops.owner;

	dev->cdev.owner = parent->driver->owner;



	/* Add the device */

	ret = cdev_add(&dev->cdev, devno, 1);

drivers/misc/mic/scif/scif_nodeqp.c

+5 −10
Original line number Diff line number Diff line
@@ -357,7 +357,7 @@ static void scif_p2p_freesg(struct scatterlist *sg) 
}



static struct scatterlist *

scif_p2p_setsg(void __iomem *va, int page_size, int page_cnt)

scif_p2p_setsg(phys_addr_t pa, int page_size, int page_cnt)

{

	struct scatterlist *sg;

	struct page *page;
@@ -368,16 +368,11 @@ scif_p2p_setsg(void __iomem *va, int page_size, int page_cnt) 
		return NULL;

	sg_init_table(sg, page_cnt);

	for (i = 0; i < page_cnt; i++) {

		page = vmalloc_to_page((void __force *)va);

		if (!page)

			goto p2p_sg_err;

		page = pfn_to_page(pa >> PAGE_SHIFT);

		sg_set_page(&sg[i], page, page_size, 0);

		va += page_size;

		pa += page_size;

	}

	return sg;

p2p_sg_err:

	kfree(sg);

	return NULL;

}



/* Init p2p mappings required to access peerdev from scifdev */
@@ -395,14 +390,14 @@ scif_init_p2p_info(struct scif_dev *scifdev, struct scif_dev *peerdev) 
	p2p = kzalloc(sizeof(*p2p), GFP_KERNEL);

	if (!p2p)

		return NULL;

	p2p->ppi_sg[SCIF_PPI_MMIO] = scif_p2p_setsg(psdev->mmio->va,

	p2p->ppi_sg[SCIF_PPI_MMIO] = scif_p2p_setsg(psdev->mmio->pa,

						    PAGE_SIZE, num_mmio_pages);

	if (!p2p->ppi_sg[SCIF_PPI_MMIO])

		goto free_p2p;

	p2p->sg_nentries[SCIF_PPI_MMIO] = num_mmio_pages;

	sg_page_shift = get_order(min(psdev->aper->len, (u64)(1 << 30)));

	num_aper_chunks = num_aper_pages >> (sg_page_shift - PAGE_SHIFT);

	p2p->ppi_sg[SCIF_PPI_APER] = scif_p2p_setsg(psdev->aper->va,

	p2p->ppi_sg[SCIF_PPI_APER] = scif_p2p_setsg(psdev->aper->pa,

						    1 << sg_page_shift,

						    num_aper_chunks);

	p2p->sg_nentries[SCIF_PPI_APER] = num_aper_chunks;

drivers/parport/share.c

+6 −5
Original line number Diff line number Diff line
@@ -891,8 +891,10 @@ parport_register_dev_model(struct parport *port, const char *name, 
	par_dev->dev.release = free_pardevice;

	par_dev->devmodel = true;

	ret = device_register(&par_dev->dev);

	if (ret)

		goto err_put_dev;

	if (ret) {

		put_device(&par_dev->dev);

		goto err_put_port;

	}



	/* Chain this onto the list */

	par_dev->prev = NULL;
@@ -907,7 +909,8 @@ parport_register_dev_model(struct parport *port, const char *name, 
			spin_unlock(&port->physport->pardevice_lock);

			pr_debug("%s: cannot grant exclusive access for device %s\n",

				 port->name, name);

			goto err_put_dev;

			device_unregister(&par_dev->dev);

			goto err_put_port;

		}

		port->flags |= PARPORT_FLAG_EXCL;

	}
@@ -938,8 +941,6 @@ parport_register_dev_model(struct parport *port, const char *name, 


	return par_dev;



err_put_dev:

	put_device(&par_dev->dev);

err_free_devname:

	kfree(devname);

err_free_par_dev: