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staging: slicoss: ensure mapping of io-memory is uncached 

Writes to registers should be done uncached for various reasons. Ensure
this by replacing ioremap() with ioremap_nocache().

Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lino Sanfilippo 2016-07-22 23:09:13 +02:00 committed by Greg Kroah-Hartman
parent da16975409
commit 6d5f2ea741
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/slicoss/slicoss.c
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@ -3136,7 +3136,7 @@ static int slic_entry_probe(struct pci_dev *pcidev,
mmio_start = pci_resource_start(pcidev, 0);
mmio_len = pci_resource_len(pcidev, 0);
memmapped_ioaddr = ioremap(mmio_start, mmio_len);
memmapped_ioaddr = ioremap_nocache(mmio_start, mmio_len);
if (!memmapped_ioaddr) {
dev_err(&pcidev->dev, "cannot remap MMIO region %lx @ %lx\n",
mmio_len, mmio_start);