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platform/x86/amd/pmf: Do not use readl() for policy buffer access

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The policy buffer is allocated using normal memory allocation
functions, so readl() should not be used on it.

Compile-tested only.

Fixes: 7c45534afa ("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>
This commit is contained in:
Armin Wolf 2024-03-04 21:50:03 +01:00 committed by Ilpo Järvinen
parent d1e33cd666
commit e42dddce83
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GPG key ID: 59AC4F6153E5CE31
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/x86/amd/pmf/tee-if.c
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@ -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)
return -EINVAL;