From b5961f86802a1d76b377940ae6df53e877bdf235 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Fri, 18 Jan 2013 01:32:02 +0000 Subject: [PATCH] powerpc/5200: Fix size to request_mem_region() call The Bestcomm driver requests a memory region larger than the one described in the device tree. This is due to an extra undocumented field in the bestcomm register structure. This hasn't been a problem up to now, but there is a patch pending to make the DT platform_bus support code use platform_device_add() which tightens the rules and provides extra checks for drivers to stay within the specified register regions. Alternately, I could have removed the extra field from the structure, but I'm not sure if it is still needed for resume to work. Better be safe and leave it in. Signed-off-by: Grant Likely Cc: Benjamin Herrenschmidt Cc: Anatolij Gustschin --- arch/powerpc/sysdev/bestcomm/bestcomm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/bestcomm/bestcomm.c b/arch/powerpc/sysdev/bestcomm/bestcomm.c index d9130630f7ef..81c331481336 100644 --- a/arch/powerpc/sysdev/bestcomm/bestcomm.c +++ b/arch/powerpc/sysdev/bestcomm/bestcomm.c @@ -414,7 +414,7 @@ static int mpc52xx_bcom_probe(struct platform_device *op) goto error_sramclean; } - if (!request_mem_region(res_bcom.start, sizeof(struct mpc52xx_sdma), + if (!request_mem_region(res_bcom.start, resource_size(&res_bcom), DRIVER_NAME)) { printk(KERN_ERR DRIVER_NAME ": " "Can't request registers region\n"); -- 2.39.5