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> > dc97fd6fec0099 Hector Martin 2022-03-10 929 > > 76cde26394114f Hector Martin 2021-01-21 930 info = aic_ic_read(irqc, AIC_INFO); > > 7c841f5f6fa3f9 Hector Martin 2022-03-10 931 irqc->nr_irq = FIELD_GET(AIC_INFO_NR_IRQ, info); > > dc97fd6fec0099 Hector Martin 2022-03-10 932 irqc->max_irq = AIC_MAX_IRQ; > > dc97fd6fec0099 Hector Martin 2022-03-10 933 > > dc97fd6fec0099 Hector Martin 2022-03-10 934 off = irqc->info.target_cpu; > > dc97fd6fec0099 Hector Martin 2022-03-10 935 off += sizeof(u32) * irqc->max_irq; /* TARGET_CPU */ > > dc97fd6fec0099 Hector Martin 2022-03-10 936 > > dc97fd6fec0099 Hector Martin 2022-03-10 937 break; > > > > "off" uninitialized if irqc->info.version != 1. > > Which is pretty much impossible by construction, as as of this > particular commit, all the possible implementations have version == 1. > > Subsequent patches do add cases where version == 2, and that gets > covered too. > > So unless I'm missing something obvious, there is no bug here. I assumed it was something like that. The kbuild bot doesn't do cross function analysis. Neither does Clang really. regards, dan carpenter From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============6565694895253099052==" MIME-Version: 1.0 From: Dan Carpenter Subject: Re: drivers/irqchip/irq-apple-aic.c:941 aic_of_ic_init() error: uninitialized symbol 'off'. Date: Mon, 06 Jun 2022 14:25:02 +0300 Message-ID: <20220606112502.GN2168@kadam> In-Reply-To: <87zgiq3uux.wl-maz@kernel.org> List-Id: To: kbuild@lists.01.org --===============6565694895253099052== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Mon, Jun 06, 2022 at 12:16:22PM +0100, Marc Zyngier wrote: > > dc97fd6fec0099 Hector Martin 2022-03-10 926 switch (irqc->info.vers= ion) { > > dc97fd6fec0099 Hector Martin 2022-03-10 927 case 1: { > > dc97fd6fec0099 Hector Martin 2022-03-10 928 u32 info; > > dc97fd6fec0099 Hector Martin 2022-03-10 929 = > > 76cde26394114f Hector Martin 2021-01-21 930 info =3D aic_ic_read(i= rqc, AIC_INFO); > > 7c841f5f6fa3f9 Hector Martin 2022-03-10 931 irqc->nr_irq =3D FIELD= _GET(AIC_INFO_NR_IRQ, info); > > dc97fd6fec0099 Hector Martin 2022-03-10 932 irqc->max_irq =3D AIC_= MAX_IRQ; > > dc97fd6fec0099 Hector Martin 2022-03-10 933 = > > dc97fd6fec0099 Hector Martin 2022-03-10 934 off =3D irqc->info.tar= get_cpu; > > dc97fd6fec0099 Hector Martin 2022-03-10 935 off +=3D sizeof(u32) *= irqc->max_irq; /* TARGET_CPU */ > > dc97fd6fec0099 Hector Martin 2022-03-10 936 = > > dc97fd6fec0099 Hector Martin 2022-03-10 937 break; > > = > > "off" uninitialized if irqc->info.version !=3D 1. > = > Which is pretty much impossible by construction, as as of this > particular commit, all the possible implementations have version =3D=3D 1. > = > Subsequent patches do add cases where version =3D=3D 2, and that gets > covered too. > = > So unless I'm missing something obvious, there is no bug here. I assumed it was something like that. The kbuild bot doesn't do cross function analysis. Neither does Clang really. regards, dan carpenter --===============6565694895253099052==-- From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============6055065631569749975==" MIME-Version: 1.0 From: Dan Carpenter To: kbuild-all@lists.01.org Subject: Re: drivers/irqchip/irq-apple-aic.c:941 aic_of_ic_init() error: uninitialized symbol 'off'. Date: Mon, 06 Jun 2022 14:25:02 +0300 Message-ID: <20220606112502.GN2168@kadam> In-Reply-To: <87zgiq3uux.wl-maz@kernel.org> List-Id: --===============6055065631569749975== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Mon, Jun 06, 2022 at 12:16:22PM +0100, Marc Zyngier wrote: > > dc97fd6fec0099 Hector Martin 2022-03-10 926 switch (irqc->info.vers= ion) { > > dc97fd6fec0099 Hector Martin 2022-03-10 927 case 1: { > > dc97fd6fec0099 Hector Martin 2022-03-10 928 u32 info; > > dc97fd6fec0099 Hector Martin 2022-03-10 929 = > > 76cde26394114f Hector Martin 2021-01-21 930 info =3D aic_ic_read(i= rqc, AIC_INFO); > > 7c841f5f6fa3f9 Hector Martin 2022-03-10 931 irqc->nr_irq =3D FIELD= _GET(AIC_INFO_NR_IRQ, info); > > dc97fd6fec0099 Hector Martin 2022-03-10 932 irqc->max_irq =3D AIC_= MAX_IRQ; > > dc97fd6fec0099 Hector Martin 2022-03-10 933 = > > dc97fd6fec0099 Hector Martin 2022-03-10 934 off =3D irqc->info.tar= get_cpu; > > dc97fd6fec0099 Hector Martin 2022-03-10 935 off +=3D sizeof(u32) *= irqc->max_irq; /* TARGET_CPU */ > > dc97fd6fec0099 Hector Martin 2022-03-10 936 = > > dc97fd6fec0099 Hector Martin 2022-03-10 937 break; > > = > > "off" uninitialized if irqc->info.version !=3D 1. > = > Which is pretty much impossible by construction, as as of this > particular commit, all the possible implementations have version =3D=3D 1. > = > Subsequent patches do add cases where version =3D=3D 2, and that gets > covered too. > = > So unless I'm missing something obvious, there is no bug here. I assumed it was something like that. The kbuild bot doesn't do cross function analysis. Neither does Clang really. regards, dan carpenter --===============6055065631569749975==--