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Date: Tue, 10 Jan 2017 10:45:00 +0000 From: Augusto Mecking Caringi <augustocaringi@...il.com> To: Martyn Welch <martyn@...chs.me.uk> Cc: Augusto Mecking Caringi <augustocaringi@...il.com>, Manohar Vanga <manohar.vanga@...il.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Aaron Sierra <asierra@...-inc.com>, Geliang Tang <geliangtang@....com>, Alessio Igor Bogani <alessio.bogani@...ttra.eu>, devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org Subject: [PATCH] vme: Fix wrong pointer utilization in ca91cx42_slave_get 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@...il.com> --- drivers/vme/bridges/vme_ca91cx42.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c index 6b5ee89..7cc5122 100644 --- a/drivers/vme/bridges/vme_ca91cx42.c +++ b/drivers/vme/bridges/vme_ca91cx42.c @@ -464,7 +464,7 @@ static int ca91cx42_slave_get(struct vme_slave_resource *image, int *enabled, vme_bound = ioread32(bridge->base + CA91CX42_VSI_BD[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); *enabled = 0; -- 2.7.4
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