diff options
Diffstat (limited to 'target/linux/x86/patches-5.10/120-hwrng-geode-fix-accessing-registers.patch')
| -rw-r--r-- | target/linux/x86/patches-5.10/120-hwrng-geode-fix-accessing-registers.patch | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/target/linux/x86/patches-5.10/120-hwrng-geode-fix-accessing-registers.patch b/target/linux/x86/patches-5.10/120-hwrng-geode-fix-accessing-registers.patch deleted file mode 100644 index 4c8015013b..0000000000 --- a/target/linux/x86/patches-5.10/120-hwrng-geode-fix-accessing-registers.patch +++ /dev/null @@ -1,47 +0,0 @@ -From 859bd2e0c0052967536f3f902716f204d5a978b1 Mon Sep 17 00:00:00 2001 -From: Jonas Gorski <jonas.gorski@gmail.com> -Date: Fri, 8 Sep 2023 22:48:33 +0200 -Subject: [PATCH] hwrng: geode: fix accessing registers - -When the membase and pci_dev pointer were moved to a new struct in priv, -the actual membase users were left untouched, and they started reading -out arbitrary memory behind the struct instead of registers. This -unfortunately turned the RNG into a constant number generator, depending -on the content of what was at that offset. - -To fix this, update geode_rng_data_{read,present}() to also get the -membase via amd_geode_priv, and properly read from the right addresses -again. - -Fixes: 9f6ec8dc574e ("hwrng: geode - Fix PCI device refcount leak") -Reported-by: Timur I. Davletshin <timur.davletshin@gmail.com> -Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217882 -Tested-by: Timur I. Davletshin <timur.davletshin@gmail.com> -Suggested-by: Jo-Philipp Wich <jo@mein.io> -Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> ---- - drivers/char/hw_random/geode-rng.c | 6 ++++-- - 1 file changed, 4 insertions(+), 2 deletions(-) - ---- a/drivers/char/hw_random/geode-rng.c -+++ b/drivers/char/hw_random/geode-rng.c -@@ -58,7 +58,8 @@ struct amd_geode_priv { - - static int geode_rng_data_read(struct hwrng *rng, u32 *data) - { -- void __iomem *mem = (void __iomem *)rng->priv; -+ struct amd_geode_priv *priv = (struct amd_geode_priv *)rng->priv; -+ void __iomem *mem = priv->membase; - - *data = readl(mem + GEODE_RNG_DATA_REG); - -@@ -67,7 +68,8 @@ static int geode_rng_data_read(struct hw - - static int geode_rng_data_present(struct hwrng *rng, int wait) - { -- void __iomem *mem = (void __iomem *)rng->priv; -+ struct amd_geode_priv *priv = (struct amd_geode_priv *)rng->priv; -+ void __iomem *mem = priv->membase; - int data, i; - - for (i = 0; i < 20; i++) { |