evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

vme: Fix wrong pointer utilization in ca91cx42_slave_get

Browse source 
commit c8a6a09c1c617402cc9254b2bc8da359a0347d75 upstream.

In ca91cx42_slave_get function, the value pointed by vme_base pointer is
set through:

*vme_base = ioread32(bridge->base + CA91CX42_VSI_BS[i]);

So it must be dereferenced to be used in calculation of pci_base:

*pci_base = (dma_addr_t)*vme_base + pci_offset;

This bug was caught thanks to the following gcc warning:

drivers/vme/bridges/vme_ca91cx42.c: In function ‘ca91cx42_slave_get’:
drivers/vme/bridges/vme_ca91cx42.c:467:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
*pci_base = (dma_addr_t)vme_base + pci_offset;

Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com>
Acked-By: Martyn Welch <martyn@welchs.me.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Augusto Mecking Caringi 2017-01-10 10:45:00 +00:00 • committed by Greg Kroah-Hartman
parent d5fcd719e8
commit 836fd7c9e6
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/vme/bridges/vme_ca91cx42.c
View file

@ -467,7 +467,7 @@ static int ca91cx42_slave_get(struct vme_slave_resource *image, int *enabled,
vme_bound = ioread32(bridge->base + CA91CX42_VSI_BD[i]); vme_bound = ioread32(bridge->base + CA91CX42_VSI_BD[i]);
pci_offset = ioread32(bridge->base + CA91CX42_VSI_TO[i]); pci_offset = ioread32(bridge->base + CA91CX42_VSI_TO[i]);
*pci_base = (dma_addr_t)vme_base + pci_offset; *pci_base = (dma_addr_t)*vme_base + pci_offset;
*size = (unsigned long long)((vme_bound - *vme_base) + granularity); *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
*enabled = 0; *enabled = 0;