From b71f0a0b1e3fea212a6a5042ced8b48a81738ac9 Mon Sep 17 00:00:00 2001 From: Jean-Jacques Hiblot Date: Thu, 20 Sep 2018 17:02:53 +0200 Subject: [PATCH 01/11] tools: PCI: Exit with error code when test fails This makes it easier to use pcitest in automated setups. Signed-off-by: Jean-Jacques Hiblot Signed-off-by: Lorenzo Pieralisi Acked-by: Kishon Vijay Abraham I --- tools/pci/pcitest.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c index ec4d51f3308b..310a7e4850f6 100644 --- a/tools/pci/pcitest.c +++ b/tools/pci/pcitest.c @@ -140,6 +140,7 @@ static void run_test(struct pci_test *test) } fflush(stdout); + return (ret < 0) ? ret : 1 - ret; /* return 0 if test succeeded */ } int main(int argc, char **argv) @@ -228,6 +229,5 @@ usage: return -EINVAL; } - run_test(test); - return 0; + return run_test(test); } From 91e0a58e663ffdae2c96a27541794ab5a6fefb22 Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:36 +0800 Subject: [PATCH 02/11] PCI: dwc: pci-dra7xx: Fix a leaked reference by adding missing of_node_put() The call to of_get_next_child() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/dwc/pci-dra7xx.c:252:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 241, but without a corresponding object release within this function. ./drivers/pci/controller/dwc/pci-dra7xx.c:255:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 241, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Kishon Vijay Abraham I Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: linux-omap@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/dwc/pci-dra7xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c index ae84a69ae63a..627c91da5701 100644 --- a/drivers/pci/controller/dwc/pci-dra7xx.c +++ b/drivers/pci/controller/dwc/pci-dra7xx.c @@ -247,6 +247,7 @@ static int dra7xx_pcie_init_irq_domain(struct pcie_port *pp) dra7xx->irq_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX, &intx_domain_ops, pp); + of_node_put(pcie_intc_node); if (!dra7xx->irq_domain) { dev_err(dev, "Failed to get a INTx IRQ domain\n"); return -ENODEV; From e12bfa013c0972dd94c2f849e05c87f5e1913e96 Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:37 +0800 Subject: [PATCH 03/11] PCI: uniphier: Fix a leaked reference by adding missing of_node_put() The call to of_get_child_by_name() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/dwc/pcie-uniphier.c:283:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 274, but without a corresponding object release within this function. ./drivers/pci/controller/dwc/pcie-uniphier.c:290:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 274, but without a corresponding object release within this function. ./drivers/pci/controller/dwc/pcie-uniphier.c:296:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 274, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Kunihiko Hayashi Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Masahiro Yamada Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/dwc/pcie-uniphier.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c index d5dc40289cce..3f30ee4a00b3 100644 --- a/drivers/pci/controller/dwc/pcie-uniphier.c +++ b/drivers/pci/controller/dwc/pcie-uniphier.c @@ -270,6 +270,7 @@ static int uniphier_pcie_config_legacy_irq(struct pcie_port *pp) struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci); struct device_node *np = pci->dev->of_node; struct device_node *np_intc; + int ret = 0; np_intc = of_get_child_by_name(np, "legacy-interrupt-controller"); if (!np_intc) { @@ -280,20 +281,24 @@ static int uniphier_pcie_config_legacy_irq(struct pcie_port *pp) pp->irq = irq_of_parse_and_map(np_intc, 0); if (!pp->irq) { dev_err(pci->dev, "Failed to get an IRQ entry in legacy-interrupt-controller\n"); - return -EINVAL; + ret = -EINVAL; + goto out_put_node; } priv->legacy_irq_domain = irq_domain_add_linear(np_intc, PCI_NUM_INTX, &uniphier_intx_domain_ops, pp); if (!priv->legacy_irq_domain) { dev_err(pci->dev, "Failed to get INTx domain\n"); - return -ENODEV; + ret = -ENODEV; + goto out_put_node; } irq_set_chained_handler_and_data(pp->irq, uniphier_pcie_irq_handler, pp); - return 0; +out_put_node: + of_node_put(np_intc); + return ret; } static int uniphier_pcie_host_init(struct pcie_port *pp) From b35c0e4543945fe9b21e6ed9ab72cdb5efb30718 Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:38 +0800 Subject: [PATCH 04/11] PCI: dwc: layerscape: Fix a leaked reference by adding missing of_node_put() The call to of_parse_phandle() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/pci/controller/dwc/pci-layerscape.c:204:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 198, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Minghuan Lian Cc: Mingkai Hu Cc: Roy Zang Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/dwc/pci-layerscape.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c index ce45bde29bf8..3a5fa26d5e56 100644 --- a/drivers/pci/controller/dwc/pci-layerscape.c +++ b/drivers/pci/controller/dwc/pci-layerscape.c @@ -201,6 +201,7 @@ static int ls_pcie_msi_host_init(struct pcie_port *pp) return -EINVAL; } + of_node_put(msi_node); return 0; } From 69adea738eb2be70b4753dbb60eb1de9abbfb4dc Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:39 +0800 Subject: [PATCH 05/11] PCI: rockchip: Fix a leaked reference by adding missing of_node_put() The call to of_get_child_by_name() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-rockchip-host.c:729:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 718, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-rockchip-host.c:732:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 718, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Shawn Lin Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Heiko Stuebner Cc: linux-pci@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pcie-rockchip-host.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 1372d270764f..8d20f1793a61 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -724,6 +724,7 @@ static int rockchip_pcie_init_irq_domain(struct rockchip_pcie *rockchip) rockchip->irq_domain = irq_domain_add_linear(intc, PCI_NUM_INTX, &intx_domain_ops, rockchip); + of_node_put(intc); if (!rockchip->irq_domain) { dev_err(dev, "failed to get a INTx IRQ domain\n"); return -EINVAL; From 3842f5166bf1ef286fe7a39f262b5c9581308366 Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:40 +0800 Subject: [PATCH 06/11] PCI: aardvark: Fix a leaked reference by adding missing of_node_put() The call to of_get_next_child() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pci-aardvark.c:826:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 798, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Thomas Petazzoni Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pci-aardvark.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index eb58dfdaba1b..134e0306ff00 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -794,6 +794,7 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) struct device_node *node = dev->of_node; struct device_node *pcie_intc_node; struct irq_chip *irq_chip; + int ret = 0; pcie_intc_node = of_get_next_child(node, NULL); if (!pcie_intc_node) { @@ -806,8 +807,8 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) irq_chip->name = devm_kasprintf(dev, GFP_KERNEL, "%s-irq", dev_name(dev)); if (!irq_chip->name) { - of_node_put(pcie_intc_node); - return -ENOMEM; + ret = -ENOMEM; + goto out_put_node; } irq_chip->irq_mask = advk_pcie_irq_mask; @@ -819,11 +820,13 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) &advk_pcie_irq_domain_ops, pcie); if (!pcie->irq_domain) { dev_err(dev, "Failed to get a INTx IRQ domain\n"); - of_node_put(pcie_intc_node); - return -ENOMEM; + ret = -ENOMEM; + goto out_put_node; } - return 0; +out_put_node: + of_node_put(pcie_intc_node); + return ret; } static void advk_pcie_remove_irq_domain(struct advk_pcie *pcie) From 8956388d3670c5050825a6410761843ffd7e4848 Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:41 +0800 Subject: [PATCH 07/11] PCI: iproc: Fix a leaked reference by adding missing of_node_put() The call to of_parse_phandle() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. iproc_msi_init() also calls of_node_get() to increase refcount: proc_msi_init() -> iproc_msi_alloc_domains() -> pci_msi_create_irq_domain() -> msi_create_irq_domain() -> irq_domain_create_linear() -> __irq_domain_add() so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-iproc.c:1323:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1299, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-iproc.c:1330:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1299, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Ray Jui Cc: Scott Branden Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pcie-iproc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c index c20fd6bd68fd..9998c5cb44c4 100644 --- a/drivers/pci/controller/pcie-iproc.c +++ b/drivers/pci/controller/pcie-iproc.c @@ -1320,14 +1320,18 @@ static int iproc_pcie_msi_enable(struct iproc_pcie *pcie) if (pcie->need_msi_steer) { ret = iproc_pcie_msi_steer(pcie, msi_node); if (ret) - return ret; + goto out_put_node; } /* * If another MSI controller is being used, the call below should fail * but that is okay */ - return iproc_msi_init(pcie, msi_node); + ret = iproc_msi_init(pcie, msi_node); + +out_put_node: + of_node_put(msi_node); + return ret; } static void iproc_pcie_msi_disable(struct iproc_pcie *pcie) From ff7a5a0a8562434f114035a5a4cbbeec5cb6320c Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:42 +0800 Subject: [PATCH 08/11] PCI: mediatek: Fix a leaked reference by adding missing of_node_put() The call to of_get_next_child() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-mediatek.c:577:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-mediatek.c:583:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-mediatek.c:586:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Acked-by: Honghui Zhang Cc: Ryder Lee Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Matthias Brugger Cc: linux-pci@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org --- drivers/pci/controller/pcie-mediatek.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 0b6c72804e03..5c485de60466 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -578,6 +578,7 @@ static int mtk_pcie_init_irq_domain(struct mtk_pcie_port *port, port->irq_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX, &intx_domain_ops, port); + of_node_put(pcie_intc_node); if (!port->irq_domain) { dev_err(dev, "failed to get INTx IRQ domain\n"); return -ENODEV; From fbca0b284bd02bf83c9813168d1a58b6ec54d1ca Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Thu, 4 Apr 2019 16:36:08 +0530 Subject: [PATCH 09/11] tools: PCI: Add 'h' in optstring of getopt() 'h' is a valid option character for the pcitest tool used to print the pcitest usage. Add 'h' in optstring of getopt() in order to get rid of "pcitest: invalid option -- 'h'" warning. While at that remove unncessary case '?'. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Sekhar Nori Signed-off-by: Lorenzo Pieralisi --- tools/pci/pcitest.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c index 310a7e4850f6..5fa5c2bdd427 100644 --- a/tools/pci/pcitest.c +++ b/tools/pci/pcitest.c @@ -163,7 +163,7 @@ int main(int argc, char **argv) /* set default endpoint device */ test->device = "/dev/pci-endpoint-test.0"; - while ((c = getopt(argc, argv, "D:b:m:x:i:Ilrwcs:")) != EOF) + while ((c = getopt(argc, argv, "D:b:m:x:i:Ilhrwcs:")) != EOF) switch (c) { case 'D': test->device = optarg; @@ -207,7 +207,6 @@ int main(int argc, char **argv) case 's': test->size = strtoul(optarg, NULL, 0); continue; - case '?': case 'h': default: usage: @@ -225,6 +224,7 @@ usage: "\t-w Write buffer test\n" "\t-c Copy buffer test\n" "\t-s Size of buffer {default: 100KB}\n", + "\t-h Print this help message\n", argv[0]); return -EINVAL; } From 993d5fe31c7b7cf7f480c6b4bec3ed23a3a24690 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Thu, 4 Apr 2019 16:36:09 +0530 Subject: [PATCH 10/11] tools: PCI: Handle pcitest.sh independently from pcitest Handling pcitest.sh along with pcitest (obtained by compiling pcitest.c) results in pcitest.sh getting removed inadvertently while "make -C tools/pci clean". Fix it by handling pcitest.sh independently of pcitest. Fixes: 1ce78ce09430 ("tools: PCI: Change pcitest compiling process") Reported-by: Adrian Hunter Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Lorenzo Pieralisi Cc: Gustavo Pimentel --- tools/pci/Makefile | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/pci/Makefile b/tools/pci/Makefile index 46e4c2f318c9..9b7534457060 100644 --- a/tools/pci/Makefile +++ b/tools/pci/Makefile @@ -14,9 +14,12 @@ MAKEFLAGS += -r CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include -ALL_TARGETS := pcitest pcitest.sh +ALL_TARGETS := pcitest ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS)) +SCRIPTS := pcitest.sh +ALL_SCRIPTS := $(patsubst %,$(OUTPUT)%,$(SCRIPTS)) + all: $(ALL_PROGRAMS) export srctree OUTPUT CC LD CFLAGS @@ -46,6 +49,9 @@ install: $(ALL_PROGRAMS) install -d -m 755 $(DESTDIR)$(bindir); \ for program in $(ALL_PROGRAMS); do \ install $$program $(DESTDIR)$(bindir); \ + done; \ + for script in $(ALL_SCRIPTS); do \ + install $$script $(DESTDIR)$(bindir); \ done FORCE: From 507b820009a457afa78202da337bcb56791fbb12 Mon Sep 17 00:00:00 2001 From: Kangjie Lu Date: Fri, 15 Mar 2019 00:07:10 -0500 Subject: [PATCH 11/11] PCI: endpoint: Fix a potential NULL pointer dereference In case alloc_workqueue() fails, return -ENOMEM to avoid potential NULL pointer dereferences. Signed-off-by: Kangjie Lu [lorenzo.pieralisi@arm.com: commit log and code update] Signed-off-by: Lorenzo Pieralisi --- drivers/pci/endpoint/functions/pci-epf-test.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index d0b91da49bf4..ed5cd28b9572 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -591,6 +591,11 @@ static int __init pci_epf_test_init(void) kpcitest_workqueue = alloc_workqueue("kpcitest", WQ_MEM_RECLAIM | WQ_HIGHPRI, 0); + if (!kpcitest_workqueue) { + pr_err("Failed to allocate the kpcitest work queue\n"); + return -ENOMEM; + } + ret = pci_epf_register_driver(&test_driver); if (ret) { pr_err("Failed to register pci epf test driver --> %d\n", ret);