From: Sasha Levin <sashal@kernel.org> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Marc Zyngier <maz@kernel.org>, Linus Walleij <linus.walleij@linaro.org>, Lee Jones <lee.jones@linaro.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, Sasha Levin <sashal@kernel.org>, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, patches@opensource.cirrus.com Subject: [PATCH AUTOSEL 5.10 08/25] mfd: Don't use irq_create_mapping() to resolve a mapping Date: Sat, 11 Sep 2021 09:12:55 -0400 [thread overview] Message-ID: <20210911131312.285225-8-sashal@kernel.org> (raw) In-Reply-To: <20210911131312.285225-1-sashal@kernel.org> From: Marc Zyngier <maz@kernel.org> [ Upstream commit 9ff80e2de36d0554e3a6da18a171719fe8663c17 ] Although irq_create_mapping() is able to deal with duplicate mappings, it really isn't supposed to be a substitute for irq_find_mapping(), and can result in allocations that take place in atomic context if the mapping didn't exist. Fix the handful of MFD drivers that use irq_create_mapping() in interrupt context by using irq_find_mapping() instead. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Lee Jones <lee.jones@linaro.org> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@foss.st.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/mfd/ab8500-core.c | 2 +- drivers/mfd/stmpe.c | 4 ++-- drivers/mfd/tc3589x.c | 2 +- drivers/mfd/wm8994-irq.c | 2 +- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index a3bac9da8cbb..4cea63a4cab7 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -493,7 +493,7 @@ static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500, if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F) line += 1; - handle_nested_irq(irq_create_mapping(ab8500->domain, line)); + handle_nested_irq(irq_find_mapping(ab8500->domain, line)); } return 0; diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 1aee3b3253fc..508349399f8a 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -1091,7 +1091,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) if (variant->id_val == STMPE801_ID || variant->id_val == STMPE1600_ID) { - int base = irq_create_mapping(stmpe->domain, 0); + int base = irq_find_mapping(stmpe->domain, 0); handle_nested_irq(base); return IRQ_HANDLED; @@ -1119,7 +1119,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) while (status) { int bit = __ffs(status); int line = bank * 8 + bit; - int nestedirq = irq_create_mapping(stmpe->domain, line); + int nestedirq = irq_find_mapping(stmpe->domain, line); handle_nested_irq(nestedirq); status &= ~(1 << bit); diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c index 7882a37ffc35..5c2d5a6a6da9 100644 --- a/drivers/mfd/tc3589x.c +++ b/drivers/mfd/tc3589x.c @@ -187,7 +187,7 @@ static irqreturn_t tc3589x_irq(int irq, void *data) while (status) { int bit = __ffs(status); - int virq = irq_create_mapping(tc3589x->domain, bit); + int virq = irq_find_mapping(tc3589x->domain, bit); handle_nested_irq(virq); status &= ~(1 << bit); diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c index 6c3a619e2628..651a028bc519 100644 --- a/drivers/mfd/wm8994-irq.c +++ b/drivers/mfd/wm8994-irq.c @@ -154,7 +154,7 @@ static irqreturn_t wm8994_edge_irq(int irq, void *data) struct wm8994 *wm8994 = data; while (gpio_get_value_cansleep(wm8994->pdata.irq_gpio)) - handle_nested_irq(irq_create_mapping(wm8994->edge_irq, 0)); + handle_nested_irq(irq_find_mapping(wm8994->edge_irq, 0)); return IRQ_HANDLED; } -- 2.30.2
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Marc Zyngier <maz@kernel.org>, Linus Walleij <linus.walleij@linaro.org>, Lee Jones <lee.jones@linaro.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, Sasha Levin <sashal@kernel.org>, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, patches@opensource.cirrus.com Subject: [PATCH AUTOSEL 5.10 08/25] mfd: Don't use irq_create_mapping() to resolve a mapping Date: Sat, 11 Sep 2021 09:12:55 -0400 [thread overview] Message-ID: <20210911131312.285225-8-sashal@kernel.org> (raw) In-Reply-To: <20210911131312.285225-1-sashal@kernel.org> From: Marc Zyngier <maz@kernel.org> [ Upstream commit 9ff80e2de36d0554e3a6da18a171719fe8663c17 ] Although irq_create_mapping() is able to deal with duplicate mappings, it really isn't supposed to be a substitute for irq_find_mapping(), and can result in allocations that take place in atomic context if the mapping didn't exist. Fix the handful of MFD drivers that use irq_create_mapping() in interrupt context by using irq_find_mapping() instead. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Lee Jones <lee.jones@linaro.org> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@foss.st.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/mfd/ab8500-core.c | 2 +- drivers/mfd/stmpe.c | 4 ++-- drivers/mfd/tc3589x.c | 2 +- drivers/mfd/wm8994-irq.c | 2 +- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index a3bac9da8cbb..4cea63a4cab7 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -493,7 +493,7 @@ static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500, if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F) line += 1; - handle_nested_irq(irq_create_mapping(ab8500->domain, line)); + handle_nested_irq(irq_find_mapping(ab8500->domain, line)); } return 0; diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 1aee3b3253fc..508349399f8a 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -1091,7 +1091,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) if (variant->id_val == STMPE801_ID || variant->id_val == STMPE1600_ID) { - int base = irq_create_mapping(stmpe->domain, 0); + int base = irq_find_mapping(stmpe->domain, 0); handle_nested_irq(base); return IRQ_HANDLED; @@ -1119,7 +1119,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) while (status) { int bit = __ffs(status); int line = bank * 8 + bit; - int nestedirq = irq_create_mapping(stmpe->domain, line); + int nestedirq = irq_find_mapping(stmpe->domain, line); handle_nested_irq(nestedirq); status &= ~(1 << bit); diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c index 7882a37ffc35..5c2d5a6a6da9 100644 --- a/drivers/mfd/tc3589x.c +++ b/drivers/mfd/tc3589x.c @@ -187,7 +187,7 @@ static irqreturn_t tc3589x_irq(int irq, void *data) while (status) { int bit = __ffs(status); - int virq = irq_create_mapping(tc3589x->domain, bit); + int virq = irq_find_mapping(tc3589x->domain, bit); handle_nested_irq(virq); status &= ~(1 << bit); diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c index 6c3a619e2628..651a028bc519 100644 --- a/drivers/mfd/wm8994-irq.c +++ b/drivers/mfd/wm8994-irq.c @@ -154,7 +154,7 @@ static irqreturn_t wm8994_edge_irq(int irq, void *data) struct wm8994 *wm8994 = data; while (gpio_get_value_cansleep(wm8994->pdata.irq_gpio)) - handle_nested_irq(irq_create_mapping(wm8994->edge_irq, 0)); + handle_nested_irq(irq_find_mapping(wm8994->edge_irq, 0)); return IRQ_HANDLED; } -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-09-11 13:16 UTC|newest] Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-11 13:12 [PATCH AUTOSEL 5.10 01/25] dt-bindings: mtd: gpmc: Fix the ECC bytes vs. OOB bytes equation Sasha Levin 2021-09-11 13:12 ` Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 02/25] mfd: db8500-prcmu: Adjust map to reality Sasha Levin 2021-09-11 13:12 ` Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 03/25] PCI: Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 04/25] fuse: fix use after free in fuse_read_interrupt() Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 05/25] PCI: tegra194: Fix handling BME_CHGED event Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 06/25] PCI: tegra194: Fix MSI-X programming Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 07/25] PCI: tegra: Fix OF node reference leak Sasha Levin 2021-09-11 13:12 ` Sasha Levin [this message] 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 08/25] mfd: Don't use irq_create_mapping() to resolve a mapping Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 09/25] PCI: rcar: Fix runtime PM imbalance in rcar_pcie_ep_probe() Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 10/25] tracing/probes: Reject events which have the same name of existing one Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 11/25] PCI: cadence: Use bitfield for *quirk_retrain_flag* instead of bool Sasha Levin 2021-09-11 13:12 ` Sasha Levin 2021-09-11 13:12 ` [PATCH AUTOSEL 5.10 12/25] PCI: cadence: Add quirk flag to set minimum delay in LTSSM Detect.Quiet state Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 13/25] PCI: j721e: Add PCIe support for J7200 Sasha Levin 2021-09-11 13:13 ` Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 14/25] PCI: j721e: Add PCIe support for AM64 Sasha Levin 2021-09-11 13:13 ` Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 15/25] PCI: Add ACS quirks for Cavium multi-function devices Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 16/25] watchdog: Start watchdog in watchdog_set_last_hw_keepalive only if appropriate Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 17/25] octeontx2-af: Add additional register check to rvu_poll_reg() Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 18/25] Set fc_nlinfo in nh_create_ipv4, nh_create_ipv6 Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 19/25] net: usb: cdc_mbim: avoid altsetting toggling for Telit LN920 Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 20/25] block, bfq: honor already-setup queue merges Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 21/25] PCI: ibmphp: Fix double unmap of io_mem Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 22/25] ethtool: Fix an error code in cxgb2.c Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 23/25] NTB: Fix an error code in ntb_msit_probe() Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 24/25] NTB: perf: Fix an error code in perf_setup_inbuf() Sasha Levin 2021-09-11 13:13 ` [PATCH AUTOSEL 5.10 25/25] net: phylink: add suspend/resume support Sasha Levin
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