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crypto: ccp - Drop extra doorbell checks

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The doorbell register set used for I2C arbitration is dedicated for this
purpose and there is no need to utilize other safety checks the platform
access register set uses.

Suggested-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Mark Hasemeyer <markhas@chromium.org>
Tested-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Mario Limonciello 2023-04-03 13:32:10 -05:00 committed by Herbert Xu
parent c79a3169b9
commit cfd7ca021e
1 changed files with 0 additions and 20 deletions
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20
drivers/crypto/ccp/platform-access.c
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@ -20,14 +20,6 @@
#define PSP_CMD_TIMEOUT_US (500 * USEC_PER_MSEC)
/* Doorbell shouldn't be ringing */
static int check_doorbell(u32 __iomem *doorbell)
{
u32 tmp;
return readl_poll_timeout(doorbell, tmp, tmp != 0, 0, PSP_CMD_TIMEOUT_US);
}
/* Recovery field should be equal 0 to start sending commands */
static int check_recovery(u32 __iomem *cmd)
{
@ -156,18 +148,6 @@ int psp_ring_platform_doorbell(int msg)
mutex_lock(&pa_dev->doorbell_mutex);
if (check_doorbell(button)) {
dev_dbg(psp->dev, "doorbell is not ready\n");
ret = -EBUSY;
goto unlock;
}
if (check_recovery(cmd)) {
dev_dbg(psp->dev, "doorbell command in recovery\n");
ret = -EBUSY;
goto unlock;
}
if (wait_cmd(cmd)) {
dev_dbg(psp->dev, "doorbell command not done processing\n");
ret = -EBUSY;