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Sat, 14 Mar 2020 10:19:14 -0700 (PDT) Date: Sat, 14 Mar 2020 10:19:12 -0700 From: Guenter Roeck To: afzal mohammed Subject: Re: [PATCH v2] MIPS: pass non-NULL dev_id on shared request_irq() Message-ID: <20200314171912.GA24092@roeck-us.net> References: <20200304203144.GA4323@alpha.franken.de> <20200305115759.3186-1-afzal.mohd.ma@gmail.com> <20200311053126.GA48442@ubuntu-m2-xlarge-x86> <20200311090308.GA5060@afzalpc> <20200311104217.GA10615@alpha.franken.de> <20200311131210.GA5115@afzalpc> <20200311160307.GA15464@alpha.franken.de> <20200311163249.GA4984@afzalpc> <20200313121138.GA5985@afzalpc> <20200314081312.GA4948@afzalpc> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200314081312.GA4948@afzalpc> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200314_101917_315588_41841E8A X-CRM114-Status: GOOD ( 20.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Florian Fainelli , Paul Burton , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Thomas Bogendoerfer , bcm-kernel-feedback-list@broadcom.com, Jiaxun Yang , "Maciej W. Rozycki" , John Crispin , Huacai Chen , Nathan Chancellor , Keguang Zhang , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, Mar 14, 2020 at 01:43:12PM +0530, afzal mohammed wrote: > Recently all usages of setup_irq() was replaced by request_irq(). > request_irq() does a few sanity checks that were not done in > setup_irq(), if they fail irq registration will fail. One of the check > is to ensure that non-NULL dev_id is passed in the case of shared irq. > This caused malta on qemu to hang. > > Fix it by passing handler as dev_id to all request_irq()'s that are > shared. For sni, instead of passing non-NULL dev_id, remove shared irq > flags. > > Fixes: ac8fd122e070 ("MIPS: Replace setup_irq() by request_irq()") > Reported-by: Nathan Chancellor > Suggested-by: Thomas Bogendoerfer > Signed-off-by: afzal mohammed Tested-by: Guenter Roeck > --- > > v2: > * use handler for dev_id > * remove shared irq flags for sni > > arch/mips/dec/setup.c | 2 +- > arch/mips/kernel/cevt-r4k.c | 3 ++- > arch/mips/loongson2ef/lemote-2f/irq.c | 2 +- > arch/mips/pmcs-msp71xx/msp_time.c | 2 +- > arch/mips/sni/a20r.c | 4 ++-- > arch/mips/sni/pcit.c | 8 ++++---- > arch/mips/sni/rm200.c | 6 +++--- > 7 files changed, 14 insertions(+), 13 deletions(-) > > diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c > index c8bbac0c5051..d4e868b828e5 100644 > --- a/arch/mips/dec/setup.c > +++ b/arch/mips/dec/setup.c > @@ -758,7 +758,7 @@ void __init arch_init_irq(void) > /* Register the bus error interrupt. */ > if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq_handler) { > if (request_irq(dec_interrupt[DEC_IRQ_BUS], busirq_handler, > - busirq_flags, "bus error", NULL)) > + busirq_flags, "bus error", busirq_handler)) > pr_err("Failed to register bus error interrupt\n"); > } > /* Register the HALT interrupt. */ > diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c > index 64e917dfe6b2..17a9cbb8b3df 100644 > --- a/arch/mips/kernel/cevt-r4k.c > +++ b/arch/mips/kernel/cevt-r4k.c > @@ -292,7 +292,8 @@ int r4k_clockevent_init(void) > > cp0_timer_irq_installed = 1; > > - if (request_irq(irq, c0_compare_interrupt, flags, "timer", NULL)) > + if (request_irq(irq, c0_compare_interrupt, flags, "timer", > + c0_compare_interrupt)) > pr_err("Failed to request irq %d (timer)\n", irq); > > return 0; > diff --git a/arch/mips/loongson2ef/lemote-2f/irq.c b/arch/mips/loongson2ef/lemote-2f/irq.c > index 34e15e8b7a8f..6f00579971a3 100644 > --- a/arch/mips/loongson2ef/lemote-2f/irq.c > +++ b/arch/mips/loongson2ef/lemote-2f/irq.c > @@ -109,7 +109,7 @@ void __init mach_init_irq(void) > > /* setup north bridge irq (bonito) */ > if (request_irq(LOONGSON_NORTH_BRIDGE_IRQ, ip6_action, > - IRQF_SHARED | IRQF_NO_THREAD, "cascade", NULL)) > + IRQF_SHARED | IRQF_NO_THREAD, "cascade", ip6_action)) > pr_err("Failed to register north bridge cascade interrupt\n"); > /* setup source bridge irq (i8259) */ > if (request_irq(LOONGSON_SOUTH_BRIDGE_IRQ, no_action, > diff --git a/arch/mips/pmcs-msp71xx/msp_time.c b/arch/mips/pmcs-msp71xx/msp_time.c > index baf0da8b4c98..9c629829f447 100644 > --- a/arch/mips/pmcs-msp71xx/msp_time.c > +++ b/arch/mips/pmcs-msp71xx/msp_time.c > @@ -81,7 +81,7 @@ unsigned int get_c0_compare_int(void) > /* MIPS_MT modes may want timer for second VPE */ > if ((get_current_vpe()) && !tim_installed) { > if (request_irq(MSP_INT_VPE1_TIMER, c0_compare_interrupt, flags, > - "timer", NULL)) > + "timer", c0_compare_interrupt)) > pr_err("Failed to register timer interrupt\n"); > tim_installed++; > } > diff --git a/arch/mips/sni/a20r.c b/arch/mips/sni/a20r.c > index ba966d62fb4b..0ecffb65fd6d 100644 > --- a/arch/mips/sni/a20r.c > +++ b/arch/mips/sni/a20r.c > @@ -222,8 +222,8 @@ void __init sni_a20r_irq_init(void) > irq_set_chip_and_handler(i, &a20r_irq_type, handle_level_irq); > sni_hwint = a20r_hwint; > change_c0_status(ST0_IM, IE_IRQ0); > - if (request_irq(SNI_A20R_IRQ_BASE + 3, sni_isa_irq_handler, > - IRQF_SHARED, "ISA", NULL)) > + if (request_irq(SNI_A20R_IRQ_BASE + 3, sni_isa_irq_handler, 0, "ISA", > + NULL)) > pr_err("Failed to register ISA interrupt\n"); > } > > diff --git a/arch/mips/sni/pcit.c b/arch/mips/sni/pcit.c > index 4a850ab03398..b331fe22c529 100644 > --- a/arch/mips/sni/pcit.c > +++ b/arch/mips/sni/pcit.c > @@ -244,8 +244,8 @@ void __init sni_pcit_irq_init(void) > *(volatile u32 *)SNI_PCIT_INT_REG = 0; > sni_hwint = sni_pcit_hwint; > change_c0_status(ST0_IM, IE_IRQ1); > - if (request_irq(SNI_PCIT_INT_START + 6, sni_isa_irq_handler, > - IRQF_SHARED, "ISA", NULL)) > + if (request_irq(SNI_PCIT_INT_START + 6, sni_isa_irq_handler, 0, "ISA", > + NULL)) > pr_err("Failed to register ISA interrupt\n"); > } > > @@ -259,8 +259,8 @@ void __init sni_pcit_cplus_irq_init(void) > *(volatile u32 *)SNI_PCIT_INT_REG = 0x40000000; > sni_hwint = sni_pcit_hwint_cplus; > change_c0_status(ST0_IM, IE_IRQ0); > - if (request_irq(MIPS_CPU_IRQ_BASE + 3, sni_isa_irq_handler, > - IRQF_SHARED, "ISA", NULL)) > + if (request_irq(MIPS_CPU_IRQ_BASE + 3, sni_isa_irq_handler, 0, "ISA", > + NULL)) > pr_err("Failed to register ISA interrupt\n"); > } > > diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c > index ba1f2fc6a43e..d84744ca871d 100644 > --- a/arch/mips/sni/rm200.c > +++ b/arch/mips/sni/rm200.c > @@ -473,10 +473,10 @@ void __init sni_rm200_irq_init(void) > sni_hwint = sni_rm200_hwint; > change_c0_status(ST0_IM, IE_IRQ0); > if (request_irq(SNI_RM200_INT_START + 0, sni_rm200_i8259A_irq_handler, > - IRQF_SHARED, "onboard ISA", NULL)) > + 0, "onboard ISA", NULL)) > pr_err("Failed to register onboard ISA interrupt\n"); > - if (request_irq(SNI_RM200_INT_START + 1, sni_isa_irq_handler, > - IRQF_SHARED, "ISA", NULL)) > + if (request_irq(SNI_RM200_INT_START + 1, sni_isa_irq_handler, 0, "ISA", > + NULL)) > pr_err("Failed to register ISA interrupt\n"); > } > > -- > 2.18.0 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel