From 122426d46e31391480c4b83b1003e4feca24d491 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 6 Apr 2015 20:28:39 -0600 Subject: [PATCH] ARM: bcm2835: use phys_to_bus() for mbox When we communicate with the VideoCore to perform property mailbox transactions, that is a DMA operation as far as the property buffer is concerned. Use phys_to_bus() on that buffer. Signed-off-by: Stephen Warren --- arch/arm/mach-bcm283x/mbox.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-bcm283x/mbox.c b/arch/arm/mach-bcm283x/mbox.c index 3b17a31eac..1af9be78c6 100644 --- a/arch/arm/mach-bcm283x/mbox.c +++ b/arch/arm/mach-bcm283x/mbox.c @@ -7,6 +7,7 @@ #include #include #include +#include #define TIMEOUT 1000 /* ms */ @@ -110,10 +111,10 @@ int bcm2835_mbox_call_prop(u32 chan, struct bcm2835_mbox_hdr *buffer) dump_buf(buffer); #endif - ret = bcm2835_mbox_call_raw(chan, (u32)buffer, &rbuffer); + ret = bcm2835_mbox_call_raw(chan, phys_to_bus((u32)buffer), &rbuffer); if (ret) return ret; - if (rbuffer != (u32)buffer) { + if (rbuffer != phys_to_bus((u32)buffer)) { printf("mbox: Response buffer mismatch\n"); return -1; } -- 2.25.1