Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/amdgpu/display: use msleep rather than udelay for HDCP
ARM has a 2000us limit for udelay. Switch to msleep. This code
executes in a worker thread so shouldn't be an atomic context.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191217204707.2258744-2-alexander.deucher@amd.com
authored by
Alex Deucher
and committed by
Dave Airlie
5f773e55
4e328922
+3
-3
+3
-3
drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
+3
-3
drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
···
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{
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enum mod_hdcp_status status;
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uint8_t size;
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-
uint16_t max_wait = 20000; // units of us
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+
uint16_t max_wait = 20; // units of ms
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uint16_t num_polls = 5;
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uint16_t wait_time = max_wait / num_polls;
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···
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status = MOD_HDCP_STATUS_INVALID_OPERATION;
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else
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for (; num_polls; num_polls--) {
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-
udelay(wait_time);
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+
msleep(wait_time);
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status = mod_hdcp_read_rxstatus(hdcp);
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if (status != MOD_HDCP_STATUS_SUCCESS)
···
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hdcp, "lc_init_write"))
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goto out;
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if (is_dp_hdcp(hdcp))
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-
udelay(16000);
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+
msleep(16);
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else
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if (!mod_hdcp_execute_and_set(poll_l_prime_available,
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&input->l_prime_available_poll, &status,