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bh=Q3+800fhd/fwWAp0F7nWO/Ih5K1cq1Tqdf0ZT226Bzg=; b=RcUITd3QMEvhfE9bwSJwnvNIVikJeqzeg6S0BGkUEuXmM0I3+vJgOGGY /zKgfrSPlZ2adJel2Lhxt/n5w/Ins7HkMr7k0mL/THR+q48IniqVfzHgP eu38ospjuK791rZwodxB2dkhhgZM2ryDKfqS5O1lGCMMGRdAgQyh8YpeQ 8cUNjjIwTsL2EJvNHKq3KGs3c2JPfFgKpPW85cl/Rp8tqmXUU7hpvgAcT T99xRZ3jFfAgsaBkOtr6wSnP02GrhpJfmvK5Coe+/VYJ6wjWPut7gq5JP 5gAZiTijsiBfbdeMlAgdv3ByiKydRu+m1UHxIJCbPKHl3w0mV8SwDB7ZG g==; X-IronPort-AV: E=McAfee;i="6600,9927,10974"; a="690079" X-IronPort-AV: E=Sophos;i="6.05,245,1701158400"; d="scan'208";a="690079" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2024 05:35:27 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,245,1701158400"; d="scan'208";a="923292" Received: from ijarvine-desk1.ger.corp.intel.com (HELO localhost) ([10.246.35.237]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2024 05:35:23 -0800 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: Thomas Bogendoerfer , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH 3/4] MIPS: PCI: Return PCIBIOS_* from tx4927_pci_config_read/write() Date: Mon, 5 Feb 2024 15:34:49 +0200 Message-Id: <20240205133450.5222-4-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240205133450.5222-1-ilpo.jarvinen@linux.intel.com> References: <20240205133450.5222-1-ilpo.jarvinen@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790071180477709811 X-GMAIL-MSGID: 1790071180477709811 pci_ops .read/.write must return PCIBIOS_* codes but tx4927_pci_config_read/write() return -1 when mkaddr() cannot find devfn from the root bus. Return PCIBIOS_DEVICE_NOT_FOUND instead and pass that onward in the call chain instead of overwriting the return value. Signed-off-by: Ilpo Järvinen Reviewed-by: Sergio Paracuellos --- arch/mips/pci/ops-tx4927.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c index f7802f100401..4dd8b93985fb 100644 --- a/arch/mips/pci/ops-tx4927.c +++ b/arch/mips/pci/ops-tx4927.c @@ -60,7 +60,7 @@ static int mkaddr(struct pci_bus *bus, unsigned int devfn, int where, { if (bus->parent == NULL && devfn >= PCI_DEVFN(TX4927_PCIC_MAX_DEVNU, 0)) - return -1; + return PCIBIOS_DEVICE_NOT_FOUND; __raw_writel(((bus->number & 0xff) << 0x10) | ((devfn & 0xff) << 0x08) | (where & 0xfc) | (bus->parent ? 1 : 0), @@ -140,10 +140,12 @@ static int tx4927_pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val) { struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(bus); + int ret; - if (mkaddr(bus, devfn, where, pcicptr)) { + ret = mkaddr(bus, devfn, where, pcicptr); + if (ret != PCIBIOS_SUCCESSFUL) { *val = 0xffffffff; - return -1; + return ret; } switch (size) { case 1: @@ -162,9 +164,11 @@ static int tx4927_pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) { struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(bus); + int ret; - if (mkaddr(bus, devfn, where, pcicptr)) - return -1; + ret = mkaddr(bus, devfn, where, pcicptr); + if (ret != PCIBIOS_SUCCESSFUL) + return ret; switch (size) { case 1: icd_writeb(val, where & 3, pcicptr);