From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Date: Mon, 11 Jun 2018 16:25:52 +0000 Subject: Re: [Intel-gfx] [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check Message-Id: <20180611162552.GY23723@intel.com> List-Id: References: <20180611160037.23402-1-colin.king@canonical.com> In-Reply-To: <20180611160037.23402-1-colin.king@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Colin King Cc: David Airlie , intel-gfx@lists.freedesktop.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Rodrigo Vivi On Mon, Jun 11, 2018 at 05:00:37PM +0100, Colin King wrote: > From: Colin Ian King >=20 > The check for level being less than zero is redundant as level > is an unsigned u32 and hence will never be less than zero. > Remove this redundant check. >=20 > Detected by CoverityScan, CID#1468363 ("Macro compares unsigned to 0") >=20 > Signed-off-by: Colin Ian King > --- > drivers/gpu/drm/i915/intel_guc.c | 2 -- > 1 file changed, 2 deletions(-) >=20 > diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/inte= l_guc.c > index 116f4ccf1bbd..a2f782a4f97d 100644 > --- a/drivers/gpu/drm/i915/intel_guc.c > +++ b/drivers/gpu/drm/i915/intel_guc.c > @@ -208,8 +208,6 @@ static u32 get_log_control_flags(void) > u32 level =3D i915_modparams.guc_log_level; > u32 flags =3D 0; > =20 > - GEM_BUG_ON(level < 0); i915_modparams.guc_log_level is a signed int. So s/u32/int would seem like a better fix. > - > if (!GUC_LOG_LEVEL_IS_ENABLED(level)) > flags |=3D GUC_LOG_DEFAULT_DISABLED; > =20 > --=20 > 2.17.0 >=20 > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx --=20 Ville Syrj=E4l=E4 Intel -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check Date: Mon, 11 Jun 2018 19:25:52 +0300 Message-ID: <20180611162552.GY23723@intel.com> References: <20180611160037.23402-1-colin.king@canonical.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20180611160037.23402-1-colin.king@canonical.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Colin King Cc: David Airlie , intel-gfx@lists.freedesktop.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Rodrigo Vivi List-Id: dri-devel@lists.freedesktop.org T24gTW9uLCBKdW4gMTEsIDIwMTggYXQgMDU6MDA6MzdQTSArMDEwMCwgQ29saW4gS2luZyB3cm90 ZToKPiBGcm9tOiBDb2xpbiBJYW4gS2luZyA8Y29saW4ua2luZ0BjYW5vbmljYWwuY29tPgo+IAo+ IFRoZSBjaGVjayBmb3IgbGV2ZWwgYmVpbmcgbGVzcyB0aGFuIHplcm8gaXMgcmVkdW5kYW50IGFz IGxldmVsCj4gaXMgYW4gdW5zaWduZWQgdTMyIGFuZCBoZW5jZSB3aWxsIG5ldmVyIGJlIGxlc3Mg dGhhbiB6ZXJvLgo+IFJlbW92ZSB0aGlzIHJlZHVuZGFudCBjaGVjay4KPiAKPiBEZXRlY3RlZCBi eSBDb3Zlcml0eVNjYW4sIENJRCMxNDY4MzYzICgiTWFjcm8gY29tcGFyZXMgdW5zaWduZWQgdG8g MCIpCj4gCj4gU2lnbmVkLW9mZi1ieTogQ29saW4gSWFuIEtpbmcgPGNvbGluLmtpbmdAY2Fub25p Y2FsLmNvbT4KPiAtLS0KPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZ3VjLmMgfCAyIC0t Cj4gIDEgZmlsZSBjaGFuZ2VkLCAyIGRlbGV0aW9ucygtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2 ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9ndWMuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVs X2d1Yy5jCj4gaW5kZXggMTE2ZjRjY2YxYmJkLi5hMmY3ODJhNGY5N2QgMTAwNjQ0Cj4gLS0tIGEv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZ3VjLmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0v aTkxNS9pbnRlbF9ndWMuYwo+IEBAIC0yMDgsOCArMjA4LDYgQEAgc3RhdGljIHUzMiBnZXRfbG9n X2NvbnRyb2xfZmxhZ3Modm9pZCkKPiAgCXUzMiBsZXZlbCA9IGk5MTVfbW9kcGFyYW1zLmd1Y19s b2dfbGV2ZWw7Cj4gIAl1MzIgZmxhZ3MgPSAwOwo+ICAKPiAtCUdFTV9CVUdfT04obGV2ZWwgPCAw KTsKCmk5MTVfbW9kcGFyYW1zLmd1Y19sb2dfbGV2ZWwgaXMgYSBzaWduZWQgaW50LiBTbyBzL3Uz Mi9pbnQgd291bGQgc2VlbQpsaWtlIGEgYmV0dGVyIGZpeC4KCj4gLQo+ICAJaWYgKCFHVUNfTE9H X0xFVkVMX0lTX0VOQUJMRUQobGV2ZWwpKQo+ICAJCWZsYWdzIHw9IEdVQ19MT0dfREVGQVVMVF9E SVNBQkxFRDsKPiAgCj4gLS0gCj4gMi4xNy4wCj4gCj4gX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KPiBJbnRlbC1nZnggbWFpbGluZyBsaXN0Cj4gSW50ZWwt Z2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwo+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3Jn L21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4CgotLSAKVmlsbGUgU3lyasOkbMOkCkludGVsCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBt YWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3Rz LmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.codeaurora.org by pdx-caf-mail.web.codeaurora.org (Dovecot) with LMTP id IIjlLZiiHltiUAAAmS7hNA ; 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Mon, 11 Jun 2018 12:25:56 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Jun 2018 09:25:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,502,1520924400"; d="scan'208";a="66100254" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.174]) by orsmga002.jf.intel.com with SMTP; 11 Jun 2018 09:25:52 -0700 Received: by stinkbox (sSMTP sendmail emulation); Mon, 11 Jun 2018 19:25:52 +0300 Date: Mon, 11 Jun 2018 19:25:52 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Colin King Cc: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [Intel-gfx] [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check Message-ID: <20180611162552.GY23723@intel.com> References: <20180611160037.23402-1-colin.king@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20180611160037.23402-1-colin.king@canonical.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 11, 2018 at 05:00:37PM +0100, Colin King wrote: > From: Colin Ian King > > The check for level being less than zero is redundant as level > is an unsigned u32 and hence will never be less than zero. > Remove this redundant check. > > Detected by CoverityScan, CID#1468363 ("Macro compares unsigned to 0") > > Signed-off-by: Colin Ian King > --- > drivers/gpu/drm/i915/intel_guc.c | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c > index 116f4ccf1bbd..a2f782a4f97d 100644 > --- a/drivers/gpu/drm/i915/intel_guc.c > +++ b/drivers/gpu/drm/i915/intel_guc.c > @@ -208,8 +208,6 @@ static u32 get_log_control_flags(void) > u32 level = i915_modparams.guc_log_level; > u32 flags = 0; > > - GEM_BUG_ON(level < 0); i915_modparams.guc_log_level is a signed int. So s/u32/int would seem like a better fix. > - > if (!GUC_LOG_LEVEL_IS_ENABLED(level)) > flags |= GUC_LOG_DEFAULT_DISABLED; > > -- > 2.17.0 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ville Syrjälä Intel