diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch b/target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch deleted file mode 100644 index eb53480080..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch +++ /dev/null @@ -1,154 +0,0 @@ -From b5bd7b621f6ab2f29e9f18ec2a2720d702b9727c Mon Sep 17 00:00:00 2001 -From: Dave Stevenson <dave.stevenson@raspberrypi.org> -Date: Fri, 25 Jan 2019 17:12:54 +0000 -Subject: [PATCH] video: bcm2708_fb: Add compat_ioctl support. - -When using a 64 bit kernel with 32 bit userspace we need -compat ioctl handling for FBIODMACOPY as one of the -parameters is a pointer. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> ---- - drivers/video/fbdev/bcm2708_fb.c | 87 ++++++++++++++++++++++++-------- - 1 file changed, 66 insertions(+), 21 deletions(-) - ---- a/drivers/video/fbdev/bcm2708_fb.c -+++ b/drivers/video/fbdev/bcm2708_fb.c -@@ -482,9 +482,8 @@ static void dma_memcpy(struct bcm2708_fb - /* cache coherent but non-allocating in L1 and L2 */ - #define INTALIAS_L1L2_NONALLOCATING(x) (((x)&~0xc0000000)|0x80000000) - --static long vc_mem_copy(struct bcm2708_fb *fb, unsigned long arg) -+static long vc_mem_copy(struct bcm2708_fb *fb, struct fb_dmacopy *ioparam) - { -- struct fb_dmacopy ioparam; - size_t size = PAGE_SIZE; - u32 *buf = NULL; - dma_addr_t bus_addr; -@@ -497,26 +496,16 @@ static long vc_mem_copy(struct bcm2708_f - goto out; - } - -- /* Get the parameter data. -- */ -- if (copy_from_user -- (&ioparam, (void *)arg, sizeof(ioparam)) != 0) { -- pr_err("[%s]: failed to copy-from-user\n", -- __func__); -- rc = -EFAULT; -- goto out; -- } -- -- if (fb->gpu.base == 0 || fb->gpu.length == 0) { -+ if (!fb->gpu.base || !fb->gpu.length) { - pr_err("[%s]: Unable to determine gpu memory (%x,%x)\n", - __func__, fb->gpu.base, fb->gpu.length); - return -EFAULT; - } - -- if (INTALIAS_NORMAL(ioparam.src) < fb->gpu.base || -- INTALIAS_NORMAL(ioparam.src) >= fb->gpu.base + fb->gpu.length) { -+ if (INTALIAS_NORMAL(ioparam->src) < fb->gpu.base || -+ INTALIAS_NORMAL(ioparam->src) >= fb->gpu.base + fb->gpu.length) { - pr_err("[%s]: Invalid memory access %x (%x-%x)", __func__, -- INTALIAS_NORMAL(ioparam.src), fb->gpu.base, -+ INTALIAS_NORMAL(ioparam->src), fb->gpu.base, - fb->gpu.base + fb->gpu.length); - return -EFAULT; - } -@@ -530,11 +519,11 @@ static long vc_mem_copy(struct bcm2708_f - goto out; - } - -- for (offset = 0; offset < ioparam.length; offset += size) { -- size_t remaining = ioparam.length - offset; -+ for (offset = 0; offset < ioparam->length; offset += size) { -+ size_t remaining = ioparam->length - offset; - size_t s = min(size, remaining); -- unsigned char *p = (unsigned char *)ioparam.src + offset; -- unsigned char *q = (unsigned char *)ioparam.dst + offset; -+ u8 *p = (u8 *)((uintptr_t)ioparam->src + offset); -+ u8 *q = (u8 *)ioparam->dst + offset; - - dma_memcpy(fb, bus_addr, - INTALIAS_L1L2_NONALLOCATING((dma_addr_t)p), size); -@@ -566,8 +555,19 @@ static int bcm2708_ioctl(struct fb_info - &dummy, sizeof(dummy)); - break; - case FBIODMACOPY: -- ret = vc_mem_copy(fb, arg); -+ { -+ struct fb_dmacopy ioparam; -+ /* Get the parameter data. -+ */ -+ if (copy_from_user -+ (&ioparam, (void *)arg, sizeof(ioparam))) { -+ pr_err("[%s]: failed to copy-from-user\n", __func__); -+ ret = -EFAULT; -+ break; -+ } -+ ret = vc_mem_copy(fb, &ioparam); - break; -+ } - default: - dev_dbg(info->device, "Unknown ioctl 0x%x\n", cmd); - return -ENOTTY; -@@ -578,6 +578,48 @@ static int bcm2708_ioctl(struct fb_info - - return ret; - } -+ -+#ifdef CONFIG_COMPAT -+struct fb_dmacopy32 { -+ compat_uptr_t dst; -+ __u32 src; -+ __u32 length; -+}; -+ -+#define FBIODMACOPY32 _IOW('z', 0x22, struct fb_dmacopy32) -+ -+static int bcm2708_compat_ioctl(struct fb_info *info, unsigned int cmd, -+ unsigned long arg) -+{ -+ struct bcm2708_fb *fb = to_bcm2708(info); -+ int ret; -+ -+ switch (cmd) { -+ case FBIODMACOPY32: -+ { -+ struct fb_dmacopy32 param32; -+ struct fb_dmacopy param; -+ /* Get the parameter data. -+ */ -+ if (copy_from_user(¶m32, (void *)arg, sizeof(param32))) { -+ pr_err("[%s]: failed to copy-from-user\n", __func__); -+ ret = -EFAULT; -+ break; -+ } -+ param.dst = compat_ptr(param32.dst); -+ param.src = param32.src; -+ param.length = param32.length; -+ ret = vc_mem_copy(fb, ¶m); -+ break; -+ } -+ default: -+ ret = bcm2708_ioctl(info, cmd, arg); -+ break; -+ } -+ return ret; -+} -+#endif -+ - static void bcm2708_fb_fillrect(struct fb_info *info, - const struct fb_fillrect *rect) - { -@@ -768,6 +810,9 @@ static struct fb_ops bcm2708_fb_ops = { - .fb_imageblit = bcm2708_fb_imageblit, - .fb_pan_display = bcm2708_fb_pan_display, - .fb_ioctl = bcm2708_ioctl, -+#ifdef CONFIG_COMPAT -+ .fb_compat_ioctl = bcm2708_compat_ioctl, -+#endif - }; - - static int bcm2708_fb_register(struct bcm2708_fb *fb) |