5.4-stable patches

added patches:
	ad7780-fix-division-by-zero-in-ad7780_write_raw.patch

diff --git a/queue-5.4/ad7780-fix-division-by-zero-in-ad7780_write_raw.patch b/queue-5.4/ad7780-fix-division-by-zero-in-ad7780_write_raw.patch
new file mode 100644 (file)
index 0000000..cb06648
--- /dev/null
+++ b/queue-5.4/ad7780-fix-division-by-zero-in-ad7780_write_raw.patch
@@ -0,0 +1,35 @@
+From c174b53e95adf2eece2afc56cd9798374919f99a Mon Sep 17 00:00:00 2001
+From: Zicheng Qu <quzicheng@huawei.com>
+Date: Mon, 28 Oct 2024 14:20:27 +0000
+Subject: ad7780: fix division by zero in ad7780_write_raw()
+
+From: Zicheng Qu <quzicheng@huawei.com>
+
+commit c174b53e95adf2eece2afc56cd9798374919f99a upstream.
+
+In the ad7780_write_raw() , val2 can be zero, which might lead to a
+division by zero error in DIV_ROUND_CLOSEST(). The ad7780_write_raw()
+is based on iio_info's write_raw. While val is explicitly declared that
+can be zero (in read mode), val2 is not specified to be non-zero.
+
+Fixes: 9085daa4abcc ("staging: iio: ad7780: add gain & filter gpio support")
+Cc: stable@vger.kernel.org
+Signed-off-by: Zicheng Qu <quzicheng@huawei.com>
+Link: https://patch.msgid.link/20241028142027.1032332-1-quzicheng@huawei.com
+Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/iio/adc/ad7780.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/iio/adc/ad7780.c
++++ b/drivers/iio/adc/ad7780.c
+@@ -152,7 +152,7 @@ static int ad7780_write_raw(struct iio_d
+ 
+       switch (m) {
+       case IIO_CHAN_INFO_SCALE:
+-              if (val != 0)
++              if (val != 0 || val2 == 0)
+                       return -EINVAL;
+ 
+               vref = st->int_vref_mv * 1000000LL;

diff --git a/queue-5.4/series b/queue-5.4/series
index 288fd3d464439d9b16f35513b586f4680b3779c0..cf5ce71e3eb82cb00907adae6d2d6e8f77106ded 100644 (file)
--- a/queue-5.4/series
+++ b/queue-5.4/series
@@ -211,3 +211,4 @@ media-platform-allegro-dvt-fix-possible-memory-leak-in-allocate_buffers_internal
 ovl-filter-invalid-inodes-with-missing-lookup-function.patch
 ftrace-fix-regression-with-module-command-in-stack_trace_filter.patch
 clk-qcom-gcc-qcs404-fix-initial-rate-of-gpll3.patch
+ad7780-fix-division-by-zero-in-ad7780_write_raw.patch