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drm/i915/dp: Refactor max_vswing_tries variable

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Changes the type and renames the max_vswing_tries variable
which was declared as an integer but used as a boolean
making it easy to be confused with a counter.

Changes in v2:
    - updated the title and commit message
    - left the loop exit point in place

v3: fix typo in title
v4: renamed max_vswing to max_vswing_reached (Ville)

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Marc Herbert <marc.herbert@intel.com>
Signed-off-by: Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180720214413.29506-2-rodrigo.vivi@intel.com
This commit is contained in:
Nathan Ciobanu 2018-07-20 14:44:13 -07:00 committed by Rodrigo Vivi
parent bb5ffe6fd5
commit 102506d529
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/i915/intel_dp_link_training.c
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@ -129,7 +129,8 @@ static bool
intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
{
uint8_t voltage;
int voltage_tries, max_vswing_tries, cr_tries, max_cr_tries;
int voltage_tries, cr_tries, max_cr_tries;
bool max_vswing_reached = false;
uint8_t link_config[2];
uint8_t link_bw, rate_select;
@ -182,7 +183,6 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
max_cr_tries = 80;
voltage_tries = 1;
max_vswing_tries = 0;
for (cr_tries = 0; cr_tries < max_cr_tries; ++cr_tries) {
uint8_t link_status[DP_LINK_STATUS_SIZE];
@ -203,7 +203,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
return false;
}
if (max_vswing_tries == 1) {
if (max_vswing_reached) {
DRM_DEBUG_KMS("Max Voltage Swing reached\n");
return false;
}
@ -224,7 +224,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
voltage_tries = 1;
if (intel_dp_link_max_vswing_reached(intel_dp))
++max_vswing_tries;
max_vswing_reached = true;
}
DRM_ERROR("Failed clock recovery %d times, giving up!\n", max_cr_tries);