From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Date: Thu, 03 May 2018 16:40:00 +0000 Subject: Re: [PATCH] drm/i915/dp: silence a static checker warning Message-Id: <20180503164000.GJ2054@intel.com> List-Id: References: <20180503105306.GA5315@mwanda> In-Reply-To: <20180503105306.GA5315@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dan Carpenter Cc: David Airlie , intel-gfx@lists.freedesktop.org, kernel-janitors@vger.kernel.org On Thu, May 03, 2018 at 01:53:22PM +0300, Dan Carpenter wrote: > Smatch warns that "n_entries" isn't always set. It would trigger a > some WARN_ON()s on that path so presumably it can't happen but it's > simple enough to initialize it to zero just to silence the warning. I usually would just ask if it would be possible to dispositioning as false positive or intentional on the tool, but it looks better indeed... so, why not?! > > Signed-off-by: Dan Carpenter Reviewed-by: Rodrigo Vivi > > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c > index 8225d223f452..f4951ae33ac2 100644 > --- a/drivers/gpu/drm/i915/intel_ddi.c > +++ b/drivers/gpu/drm/i915/intel_ddi.c > @@ -2062,7 +2062,7 @@ u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder) > { > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); > enum port port = encoder->port; > - int n_entries; > + int n_entries = 0; > > if (IS_ICELAKE(dev_priv)) { > if (port = PORT_A || port = PORT_B) From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Subject: Re: [PATCH] drm/i915/dp: silence a static checker warning Date: Thu, 3 May 2018 09:40:00 -0700 Message-ID: <20180503164000.GJ2054@intel.com> References: <20180503105306.GA5315@mwanda> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 739FA6E245 for ; Thu, 3 May 2018 16:40:02 +0000 (UTC) Content-Disposition: inline In-Reply-To: <20180503105306.GA5315@mwanda> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Dan Carpenter Cc: David Airlie , intel-gfx@lists.freedesktop.org, kernel-janitors@vger.kernel.org List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCBNYXkgMDMsIDIwMTggYXQgMDE6NTM6MjJQTSArMDMwMCwgRGFuIENhcnBlbnRlciB3 cm90ZToKPiBTbWF0Y2ggd2FybnMgdGhhdCAibl9lbnRyaWVzIiBpc24ndCBhbHdheXMgc2V0LiAg SXQgd291bGQgdHJpZ2dlciBhCj4gc29tZSBXQVJOX09OKClzIG9uIHRoYXQgcGF0aCBzbyBwcmVz dW1hYmx5IGl0IGNhbid0IGhhcHBlbiBidXQgaXQncwo+IHNpbXBsZSBlbm91Z2ggdG8gaW5pdGlh bGl6ZSBpdCB0byB6ZXJvIGp1c3QgdG8gc2lsZW5jZSB0aGUgd2FybmluZy4KCkkgdXN1YWxseSB3 b3VsZCBqdXN0IGFzayBpZiBpdCB3b3VsZCBiZSBwb3NzaWJsZSB0byBkaXNwb3NpdGlvbmluZwph cyBmYWxzZSBwb3NpdGl2ZSBvciBpbnRlbnRpb25hbCBvbiB0aGUgdG9vbCwgYnV0IGl0IGxvb2tz IGJldHRlcgppbmRlZWQuLi4KCnNvLCB3aHkgbm90PyEKCj4gCj4gU2lnbmVkLW9mZi1ieTogRGFu IENhcnBlbnRlciA8ZGFuLmNhcnBlbnRlckBvcmFjbGUuY29tPgoKUmV2aWV3ZWQtYnk6IFJvZHJp Z28gVml2aSA8cm9kcmlnby52aXZpQGludGVsLmNvbT4KCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2ludGVsX2RkaS5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf ZGRpLmMKPiBpbmRleCA4MjI1ZDIyM2Y0NTIuLmY0OTUxYWUzM2FjMiAxMDA2NDQKPiAtLS0gYS9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kZGkuYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2ludGVsX2RkaS5jCj4gQEAgLTIwNjIsNyArMjA2Miw3IEBAIHU4IGludGVsX2RkaV9kcF92 b2x0YWdlX21heChzdHJ1Y3QgaW50ZWxfZW5jb2RlciAqZW5jb2RlcikKPiAgewo+ICAJc3RydWN0 IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2ID0gdG9faTkxNShlbmNvZGVyLT5iYXNlLmRldik7 Cj4gIAllbnVtIHBvcnQgcG9ydCA9IGVuY29kZXItPnBvcnQ7Cj4gLQlpbnQgbl9lbnRyaWVzOwo+ ICsJaW50IG5fZW50cmllcyA9IDA7Cj4gIAo+ICAJaWYgKElTX0lDRUxBS0UoZGV2X3ByaXYpKSB7 Cj4gIAkJaWYgKHBvcnQgPT0gUE9SVF9BIHx8IHBvcnQgPT0gUE9SVF9CKQpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK