From 52807ae90e76b69fd01688d6031190271536d29f Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 8 Dec 2015 16:47:21 +0100 Subject: [PATCH] drm/sti: use u32 to store DMA addresses The STi drm driver correctly warns about invalid format strings when built with 64-bit dma_addr_t: sti_hqvdp.c: In function 'sti_hqvdp_vtg_cb': sti_hqvdp.c:605:119: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=] sti_hqvdp.c: In function 'sti_hqvdp_atomic_update': sti_hqvdp.c:931:118: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=] This could be changed to using the %pad format string, but that does not work when printing an rvalue, so instead I'm changing the type in the sti_hqvdp structure to u32, which is what gets written into the registers anyway. Signed-off-by: Arnd Bergmann Reviewed-by: Vincent Abriou --- drivers/gpu/drm/sti/sti_hqvdp.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c index e9c33fbbfa8d..d7c1f427811d 100644 --- a/drivers/gpu/drm/sti/sti_hqvdp.c +++ b/drivers/gpu/drm/sti/sti_hqvdp.c @@ -342,7 +342,7 @@ struct sti_hqvdp { struct notifier_block vtg_nb; bool btm_field_pending; void *hqvdp_cmd; - dma_addr_t hqvdp_cmd_paddr; + u32 hqvdp_cmd_paddr; struct sti_vtg *vtg; bool xp70_initialized; }; @@ -365,8 +365,8 @@ static const uint32_t hqvdp_supported_formats[] = { */ static int sti_hqvdp_get_free_cmd(struct sti_hqvdp *hqvdp) { - int curr_cmd, next_cmd; - dma_addr_t cmd = hqvdp->hqvdp_cmd_paddr; + u32 curr_cmd, next_cmd; + u32 cmd = hqvdp->hqvdp_cmd_paddr; int i; curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD); @@ -393,8 +393,8 @@ static int sti_hqvdp_get_free_cmd(struct sti_hqvdp *hqvdp) */ static int sti_hqvdp_get_curr_cmd(struct sti_hqvdp *hqvdp) { - int curr_cmd; - dma_addr_t cmd = hqvdp->hqvdp_cmd_paddr; + u32 curr_cmd; + u32 cmd = hqvdp->hqvdp_cmd_paddr; unsigned int i; curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD); @@ -846,19 +846,21 @@ int sti_hqvdp_vtg_cb(struct notifier_block *nb, unsigned long evt, void *data) static void sti_hqvdp_init(struct sti_hqvdp *hqvdp) { int size; + dma_addr_t dma_addr; hqvdp->vtg_nb.notifier_call = sti_hqvdp_vtg_cb; /* Allocate memory for the VDP commands */ size = NB_VDP_CMD * sizeof(struct sti_hqvdp_cmd); hqvdp->hqvdp_cmd = dma_alloc_writecombine(hqvdp->dev, size, - &hqvdp->hqvdp_cmd_paddr, + &dma_addr, GFP_KERNEL | GFP_DMA); if (!hqvdp->hqvdp_cmd) { DRM_ERROR("Failed to allocate memory for VDP cmd\n"); return; } + hqvdp->hqvdp_cmd_paddr = (u32)dma_addr; memset(hqvdp->hqvdp_cmd, 0, size); }