From: Chris Wilson Date: Wed, 10 Oct 2018 08:17:06 +0000 (+0100) Subject: drm/i915: Show the DPCD read error inline X-Git-Tag: v5.4-rc1~1388^2~28^2~539 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=65404c89e9539e7e569be8c790dd9e4b131149f4;p=platform%2Fkernel%2Flinux-rpi.git drm/i915: Show the DPCD read error inline When reporting the DPCD dump through debugfs, show the errors inline where appropriate. If a read at one particular offset fails, report it. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106371 Signed-off-by: Chris Wilson Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20181010081706.29931-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 4565eda..00c551d 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -4915,13 +4915,10 @@ static int i915_dpcd_show(struct seq_file *m, void *data) continue; err = drm_dp_dpcd_read(&intel_dp->aux, b->offset, buf, size); - if (err <= 0) { - DRM_ERROR("dpcd read (%zu bytes at %u) failed (%zd)\n", - size, b->offset, err); - continue; - } - - seq_printf(m, "%04x: %*ph\n", b->offset, (int) size, buf); + if (err < 0) + seq_printf(m, "%04x: ERROR %d\n", b->offset, (int)err); + else + seq_printf(m, "%04x: %*ph\n", b->offset, (int)err, buf); } return 0;