diff options
| -rw-r--r-- | drivers/media/video/uvc/uvc_driver.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index 1e3b4fe5ae93..7fe3ae954c19 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -32,6 +32,7 @@ #include <linux/vmalloc.h> #include <linux/wait.h> #include <asm/atomic.h> +#include <asm/unaligned.h> #include <media/v4l2-common.h> @@ -452,20 +453,20 @@ static int uvc_parse_format(struct uvc_device *dev, frame->bFrameIndex = buffer[3]; frame->bmCapabilities = buffer[4]; - frame->wWidth = le16_to_cpup((__le16 *)&buffer[5]); - frame->wHeight = le16_to_cpup((__le16 *)&buffer[7]); - frame->dwMinBitRate = le32_to_cpup((__le32 *)&buffer[9]); - frame->dwMaxBitRate = le32_to_cpup((__le32 *)&buffer[13]); + frame->wWidth = get_unaligned_le16(&buffer[5]); + frame->wHeight = get_unaligned_le16(&buffer[7]); + frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); + frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); if (ftype != VS_FRAME_FRAME_BASED) { frame->dwMaxVideoFrameBufferSize = - le32_to_cpup((__le32 *)&buffer[17]); + get_unaligned_le32(&buffer[17]); frame->dwDefaultFrameInterval = - le32_to_cpup((__le32 *)&buffer[21]); + get_unaligned_le32(&buffer[21]); frame->bFrameIntervalType = buffer[25]; } else { frame->dwMaxVideoFrameBufferSize = 0; frame->dwDefaultFrameInterval = - le32_to_cpup((__le32 *)&buffer[17]); + get_unaligned_le32(&buffer[17]); frame->bFrameIntervalType = buffer[21]; } frame->dwFrameInterval = *intervals; @@ -488,7 +489,7 @@ static int uvc_parse_format(struct uvc_device *dev, * some other divisions by zero which could happen. */ for (i = 0; i < n; ++i) { - interval = le32_to_cpup((__le32 *)&buffer[26+4*i]); + interval = get_unaligned_le32(&buffer[26+4*i]); *(*intervals)++ = interval ? interval : 1; } @@ -832,8 +833,7 @@ static int uvc_parse_vendor_control(struct uvc_device *dev, unit->type = VC_EXTENSION_UNIT; memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); unit->extension.bNumControls = buffer[20]; - unit->extension.bNrInPins = - le16_to_cpup((__le16 *)&buffer[21]); + unit->extension.bNrInPins = get_unaligned_le16(&buffer[21]); unit->extension.baSourceID = (__u8 *)unit + sizeof *unit; memcpy(unit->extension.baSourceID, &buffer[22], p); unit->extension.bControlSize = buffer[22+p]; @@ -877,8 +877,8 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return -EINVAL; } - dev->uvc_version = le16_to_cpup((__le16 *)&buffer[3]); - dev->clock_frequency = le32_to_cpup((__le32 *)&buffer[7]); + dev->uvc_version = get_unaligned_le16(&buffer[3]); + dev->clock_frequency = get_unaligned_le32(&buffer[7]); /* Parse all USB Video Streaming interfaces. */ for (i = 0; i < n; ++i) { @@ -905,7 +905,7 @@ static int uvc_parse_standard_control(struct uvc_device *dev, /* Make sure the terminal type MSB is not null, otherwise it * could be confused with a unit. */ - type = le16_to_cpup((__le16 *)&buffer[4]); + type = get_unaligned_le16(&buffer[4]); if ((type & 0xff00) == 0) { uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " "interface %d INPUT_TERMINAL %d has invalid " @@ -947,11 +947,11 @@ static int uvc_parse_standard_control(struct uvc_device *dev, term->camera.bControlSize = n; term->camera.bmControls = (__u8 *)term + sizeof *term; term->camera.wObjectiveFocalLengthMin = - le16_to_cpup((__le16 *)&buffer[8]); + get_unaligned_le16(&buffer[8]); term->camera.wObjectiveFocalLengthMax = - le16_to_cpup((__le16 *)&buffer[10]); + get_unaligned_le16(&buffer[10]); term->camera.wOcularFocalLength = - le16_to_cpup((__le16 *)&buffer[12]); + get_unaligned_le16(&buffer[12]); memcpy(term->camera.bmControls, &buffer[15], n); } else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT) { term->media.bControlSize = n; @@ -987,7 +987,7 @@ static int uvc_parse_standard_control(struct uvc_device *dev, /* Make sure the terminal type MSB is not null, otherwise it * could be confused with a unit. */ - type = le16_to_cpup((__le16 *)&buffer[4]); + type = get_unaligned_le16(&buffer[4]); if ((type & 0xff00) == 0) { uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " "interface %d OUTPUT_TERMINAL %d has invalid " @@ -1061,7 +1061,7 @@ static int uvc_parse_standard_control(struct uvc_device *dev, unit->type = buffer[2]; unit->processing.bSourceID = buffer[4]; unit->processing.wMaxMultiplier = - le16_to_cpup((__le16 *)&buffer[5]); + get_unaligned_le16(&buffer[5]); unit->processing.bControlSize = buffer[7]; unit->processing.bmControls = (__u8 *)unit + sizeof *unit; memcpy(unit->processing.bmControls, &buffer[8], n); @@ -1096,8 +1096,7 @@ static int uvc_parse_standard_control(struct uvc_device *dev, unit->type = buffer[2]; memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); unit->extension.bNumControls = buffer[20]; - unit->extension.bNrInPins = - le16_to_cpup((__le16 *)&buffer[21]); + unit->extension.bNrInPins = get_unaligned_le16(&buffer[21]); unit->extension.baSourceID = (__u8 *)unit + sizeof *unit; memcpy(unit->extension.baSourceID, &buffer[22], p); unit->extension.bControlSize = buffer[22+p]; |