Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (48 commits)
  V4L/DVB (8001): dib0070: fix dib0070_attach when !CONFIG_DVB_TUNER_DIB0070
  V4L/DVB (8000): tda827x: fix NULL pointer in tda827xa_lna_gain
  V4L/DVB (7990): Fix entry for PowerColor RA 330 and make it run with firmware version 2.7
  V4L/DVB (7983): tda18271_calc_rf_cal must return the return value of tda18271_lookup_map
  V4L/DVB (7978): cx18: explicitly test for XC2028 tuner
  V4L/DVB (7977): cx18: fix init order and remove duplicate open_on_first_use.
  V4L/DVB (7975): saa7134_empress
  V4L/DVB (7974): fix MEDIA_TUNER && FW_LOADER build error
  V4L/DVB (7972): or51132.c: unaligned
  V4L/DVB (7971): usb: unaligned
  V4L/DVB (7970): mix trivial endianness annotations
  V4L/DVB (7969): m920x: unaligned access
  V4L/DVB (7968): zoran: endianness annotations
  V4L/DVB (7967): bt8xx: unaligned access
  V4L/DVB (7966): cx18: direct dereferencing of iomem
  V4L/DVB (7965): annotate bcx_riscmem
  V4L/DVB (7964): cx18 iomem annotations
  V4L/DVB (7963): ivtv: trivial annotations
  V4L/DVB (7962): ttusb endianness annotations and fixes
  V4L/DVB (7961): fix endianness bug in dib0700_devices.c
  ...

2 files changed, 32 insertions, 11 deletions

diff --git a/drivers/media/dvb/ttpci/av7110.c b/drivers/media/dvb/ttpci/av7110.c
index 747e7f1..f05d43d 100644
--- a/drivers/media/dvb/ttpci/av7110.c
+++ b/drivers/media/dvb/ttpci/av7110.c
@@ -51,6 +51,7 @@
 #include <linux/crc32.h>
 #include <linux/i2c.h>
 #include <linux/kthread.h>
+#include <asm/unaligned.h>
 
 #include <asm/system.h>
 
@@ -1461,9 +1462,9 @@ static int check_firmware(struct av7110* av7110)
 	ptr += 4;
 
 	/* check dpram file */
-	crc = ntohl(*(u32*) ptr);
+	crc = get_unaligned_be32(ptr);
 	ptr += 4;
-	len = ntohl(*(u32*) ptr);
+	len = get_unaligned_be32(ptr);
 	ptr += 4;
 	if (len >= 512) {
 		printk("dvb-ttpci: dpram file is way too big.\n");
@@ -1478,9 +1479,9 @@ static int check_firmware(struct av7110* av7110)
 	ptr += len;
 
 	/* check root file */
-	crc = ntohl(*(u32*) ptr);
+	crc = get_unaligned_be32(ptr);
 	ptr += 4;
-	len = ntohl(*(u32*) ptr);
+	len = get_unaligned_be32(ptr);
 	ptr += 4;
 
 	if (len <= 200000 || len >= 300000 ||
diff --git a/drivers/media/dvb/ttpci/av7110_av.c b/drivers/media/dvb/ttpci/av7110_av.c
index 3e6b650..ec55a968 100644
--- a/drivers/media/dvb/ttpci/av7110_av.c
+++ b/drivers/media/dvb/ttpci/av7110_av.c
@@ -965,8 +965,9 @@ static u8 iframe_header[] = { 0x00, 0x00, 0x01, 0xe0, 0x00, 0x00, 0x80, 0x00, 0x
 
 static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len, int nonblock)
 {
-	int i, n;
+	unsigned i, n;
 	int progressive = 0;
+	int match = 0;
 
 	dprintk(2, "av7110:%p, \n", av7110);
 
@@ -975,12 +976,31 @@ static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len
 			return -EBUSY;
 	}
 
-	for (i = 0; i < len - 5; i++) {
-		/* get progressive flag from picture extension */
-		if (buf[i] == 0x00 && buf[i+1] == 0x00 &&
-		    buf[i+2] == 0x01 && (unsigned char)buf[i+3] == 0xb5 &&
-		    (buf[i+4] & 0xf0) == 0x10)
-			progressive = buf[i+5] & 0x08;
+	/* search in buf for instances of 00 00 01 b5 1? */
+	for (i = 0; i < len; i++) {
+		unsigned char c;
+		if (get_user(c, buf + i))
+			return -EFAULT;
+		if (match == 5) {
+			progressive = c & 0x08;
+			match = 0;
+		}
+		if (c == 0x00) {
+			match = (match == 1 || match == 2) ? 2 : 1;
+			continue;
+		}
+		switch (match++) {
+		case 2: if (c == 0x01)
+				continue;
+			break;
+		case 3: if (c == 0xb5)
+				continue;
+			break;
+		case 4: if ((c & 0xf0) == 0x10)
+				continue;
+			break;
+		}
+		match = 0;
 	}
 
 	/* setting n always > 1, fixes problems when playing stillframes