Re: [PATCH] drm/i915/guc: Replace %phn with %phN

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On Tue, 10 Apr 2018 11:14:35 +0200, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:

%phn is not a valid specifier,

Well, implementation allows that as alias for default separator ;)

	switch (fmt[1]) {
	case 'C':
		separator = ':';
		break;
	case 'D':
		separator = '-';
		break;
	case 'N':
		separator = 0;
		break;
	default:
		separator = ' ';
		break;
	}

so I presume %phN was meant for an
encoded hex string with no separator

No, default ' ' separator is desired as it is more readable:

[] writing 05 45 00 00 00 34 a2 0d 40 00 00 00 01 00 00 00
vs
[] writing 054500000034a20d4000000001000000

(and not that the hex string should
be followed by the letter 'n'!).

'n' was never added to the output, as it was consumed by fmt specifier ;)


drivers/gpu/drm/i915/intel_guc_ct.c:616 ctb_read() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:616 ctb_read() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:616 ctb_read() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:669 ct_handle_response() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:679 ct_handle_response() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:693 ct_handle_response() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:707 ct_handle_response() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:727 ct_process_request() warn: '%ph' cannot be followed by 'n' drivers/gpu/drm/i915/intel_guc_ct.c:803 ct_handle_request() warn: '%ph' cannot be followed by 'n'

hmm, I can't see these warnings, how to get them?


Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>

with s/%phN/%ph

Reviewed-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>

Thanks,
Michal
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