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| author | Armin Wolf <W_Armin@gmx.de> | 2024-03-04 23:50:03 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-27 01:17:21 +0300 |
| commit | faedc22c0c991b8860181d102414960ce3512f7e (patch) | |
| tree | dbc9c8c526473eae1acd0de7533879a6edecf367 /drivers | |
| parent | 58690276d0962e25deae71703cb3ea9bd08a6ec2 (diff) | |
| download | linux-faedc22c0c991b8860181d102414960ce3512f7e.tar.xz | |
platform/x86/amd/pmf: Do not use readl() for policy buffer access
[ Upstream commit e42dddce83a0578a518cb7078930c8269a6083af ]
The policy buffer is allocated using normal memory allocation
functions, so readl() should not be used on it.
Compile-tested only.
Fixes: 7c45534afa44 ("platform/x86/amd/pmf: Add support for PMF Policy Binary")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20240304205005.10078-3-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/amd/pmf/tee-if.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c index dcbe8f85e122..4ebfe0f5a7fb 100644 --- a/drivers/platform/x86/amd/pmf/tee-if.c +++ b/drivers/platform/x86/amd/pmf/tee-if.c @@ -249,8 +249,8 @@ static int amd_pmf_start_policy_engine(struct amd_pmf_dev *dev) u32 cookie, length; int res; - cookie = readl(dev->policy_buf + POLICY_COOKIE_OFFSET); - length = readl(dev->policy_buf + POLICY_COOKIE_LEN); + cookie = *(u32 *)(dev->policy_buf + POLICY_COOKIE_OFFSET); + length = *(u32 *)(dev->policy_buf + POLICY_COOKIE_LEN); if (cookie != POLICY_SIGN_COOKIE || !length) { dev_dbg(dev->dev, "cookie doesn't match\n"); |