diff options
| author | Mario Limonciello (AMD) <superm1@kernel.org> | 2026-01-15 22:11:31 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-26 14:59:26 -0800 |
| commit | eb5263f3f8e483caa8956404607eec1c514cadef (patch) | |
| tree | 7cdabb08c228831c35132433b8233d3affc29997 /drivers/crypto/ccp/tee-dev.c | |
| parent | 10eef0f932387b8595eff9c32e2d5b6f83856f38 (diff) | |
crypto: ccp - Factor out ring destroy handling to a helper
[ Upstream commit d95f87a65bce5f2f2a02ca6094ca4841d4073df3 ]
The ring destroy command needs to be used in multiple places. Split
out the code to a helper.
Tested-by: Yijun Shen <Yijun.Shen@Dell.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://patch.msgid.link/20260116041132.153674-5-superm1@kernel.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Stable-dep-of: 7b85137caf11 ("crypto: ccp - Send PSP_CMD_TEE_RING_DESTROY when PSP_CMD_TEE_RING_INIT fails")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/crypto/ccp/tee-dev.c')
| -rw-r--r-- | drivers/crypto/ccp/tee-dev.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/drivers/crypto/ccp/tee-dev.c b/drivers/crypto/ccp/tee-dev.c index 11c4b05e2f3a..ef1430f86ad6 100644 --- a/drivers/crypto/ccp/tee-dev.c +++ b/drivers/crypto/ccp/tee-dev.c @@ -86,6 +86,29 @@ static inline void tee_free_cmd_buffer(struct tee_init_ring_cmd *cmd) kfree(cmd); } +static bool tee_send_destroy_cmd(struct psp_tee_device *tee) +{ + unsigned int reg; + int ret; + + ret = psp_mailbox_command(tee->psp, PSP_CMD_TEE_RING_DESTROY, NULL, + TEE_DEFAULT_CMD_TIMEOUT, ®); + if (ret) { + dev_err(tee->dev, "tee: ring destroy command timed out, disabling TEE support\n"); + psp_dead = true; + return false; + } + + if (FIELD_GET(PSP_CMDRESP_STS, reg)) { + dev_err(tee->dev, "tee: ring destroy command failed (%#010lx)\n", + FIELD_GET(PSP_CMDRESP_STS, reg)); + psp_dead = true; + return false; + } + + return true; +} + static int tee_init_ring(struct psp_tee_device *tee) { int ring_size = MAX_RING_BUFFER_ENTRIES * sizeof(struct tee_ring_cmd); @@ -137,24 +160,13 @@ free_buf: static void tee_destroy_ring(struct psp_tee_device *tee) { - unsigned int reg; - int ret; - if (!tee->rb_mgr.ring_start) return; if (psp_dead) goto free_ring; - ret = psp_mailbox_command(tee->psp, PSP_CMD_TEE_RING_DESTROY, NULL, - TEE_DEFAULT_CMD_TIMEOUT, ®); - if (ret) { - dev_err(tee->dev, "tee: ring destroy command timed out, disabling TEE support\n"); - psp_dead = true; - } else if (FIELD_GET(PSP_CMDRESP_STS, reg)) { - dev_err(tee->dev, "tee: ring destroy command failed (%#010lx)\n", - FIELD_GET(PSP_CMDRESP_STS, reg)); - } + tee_send_destroy_cmd(tee); free_ring: tee_free_ring(tee); |