brcm2708: update to latest patches from RPi foundation

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0673-w1-ds2413-fix-state-byte-comparision.patch b/target/linux/brcm2708/patches-4.19/950-0673-w1-ds2413-fix-state-byte-comparision.patch
new file mode 100644
index 0000000000..0c866dada4
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0673-w1-ds2413-fix-state-byte-comparision.patch
@@ -0,0 +1,48 @@
+From d928cdb13ddd26dd4695d8626990303e9f348a8d Mon Sep 17 00:00:00 2001
+From: Mariusz Bialonczyk <manio@skyboo.net>
+Date: Thu, 30 May 2019 09:51:25 +0200
+Subject: [PATCH 673/773] w1: ds2413: fix state byte comparision
+
+commit aacd152ecd7b18af5d2d96dea9e7284c1c93abea upstream.
+
+This commit is fixing a smatch warning:
+drivers/w1/slaves/w1_ds2413.c:61 state_read() warn: impossible condition '(*buf == 255) => ((-128)-127 == 255)'
+by creating additional u8 variable for the bus reading and comparision
+
+Reported-by: kbuild test robot <lkp@intel.com>
+Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
+Cc: Dan Carpenter <dan.carpenter@oracle.com>
+Fixes: 3856032a0628 ("w1: ds2413: when the slave is not responding during read, select it again")
+Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/w1/slaves/w1_ds2413.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/drivers/w1/slaves/w1_ds2413.c
++++ b/drivers/w1/slaves/w1_ds2413.c
+@@ -33,6 +33,7 @@ static ssize_t state_read(struct file *f
+ 	struct w1_slave *sl = kobj_to_w1_slave(kobj);
+ 	unsigned int retries = W1_F3A_RETRIES;
+ 	ssize_t bytes_read = -EIO;
++	u8 state;
+ 
+ 	dev_dbg(&sl->dev,
+ 		"Reading %s kobj: %p, off: %0#10x, count: %zu, buff addr: %p",
+@@ -53,12 +54,13 @@ next:
+ 	while (retries--) {
+ 		w1_write_8(sl->master, W1_F3A_FUNC_PIO_ACCESS_READ);
+ 
+-		*buf = w1_read_8(sl->master);
+-		if ((*buf & 0x0F) == ((~*buf >> 4) & 0x0F)) {
++		state = w1_read_8(sl->master);
++		if ((state & 0x0F) == ((~state >> 4) & 0x0F)) {
+ 			/* complement is correct */
++			*buf = state;
+ 			bytes_read = 1;
+ 			goto out;
+-		} else if (*buf == W1_F3A_INVALID_PIO_STATE) {
++		} else if (state == W1_F3A_INVALID_PIO_STATE) {
+ 			/* slave didn't respond, try to select it again */
+ 			dev_warn(&sl->dev, "slave device did not respond to PIO_ACCESS_READ, " \
+ 					    "reselecting, retries left: %d\n", retries);