From: Shawn Guo <shawn.guo@linaro.org>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kernel@vger.kernel.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Thomas Gleixner <tglx@linutronix.de>,
Milton Miller <miltonm@bga.com>,
Rob Herring <rob.herring@calxeda.com>,
Stephen Rothwell <sfr@canb.auug.org.au>,
devicetree-discuss@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v3 14/25] irq_domain: Remove irq_domain_add_simple()
Date: Tue, 31 Jan 2012 20:45:03 +0800 [thread overview]
Message-ID: <20120131124500.GA28571@S2101-09.ap.freescale.net> (raw)
In-Reply-To: <1327700179-17454-15-git-send-email-grant.likely@secretlab.ca>
On Fri, Jan 27, 2012 at 02:36:08PM -0700, Grant Likely wrote:
> irq_domain_add_simple() was a stop-gap measure until complete irq_domain
> support was complete. This patch removes the irq_domain_add_simple()
> interface.
>
> v2: Updated to pass in host_data pointer on irq_domain allocation.
>
> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
> Cc: Rob Herring <rob.herring@calxeda.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Milton Miller <miltonm@bga.com>
> ---
> arch/arm/mach-imx/mach-imx6q.c | 3 ++-
> arch/arm/mach-msm/board-msm8x60.c | 8 ++------
> arch/arm/mach-mx5/imx51-dt.c | 4 ++--
> arch/arm/mach-mx5/imx53-dt.c | 4 ++--
> arch/arm/mach-omap2/board-generic.c | 2 +-
> arch/arm/mach-prima2/irq.c | 2 +-
> drivers/mfd/twl-core.c | 2 +-
> include/linux/irqdomain.h | 1 -
> kernel/irq/irqdomain.c | 10 ++--------
> 9 files changed, 13 insertions(+), 23 deletions(-)
>
...
> --- a/arch/arm/mach-mx5/imx51-dt.c
> +++ b/arch/arm/mach-mx5/imx51-dt.c
> @@ -47,7 +47,7 @@ static const struct of_dev_auxdata imx51_auxdata_lookup[] __initconst = {
> static int __init imx51_tzic_add_irq_domain(struct device_node *np,
> struct device_node *interrupt_parent)
> {
> - irq_domain_add_simple(np, 0);
> + irq_domain_add_legacy(np, 32, 0, 0, &irq_domain_simple_ops, NULL);
> return 0;
> }
>
> @@ -57,7 +57,7 @@ static int __init imx51_gpio_add_irq_domain(struct device_node *np,
> static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
>
> gpio_irq_base -= 32;
> - irq_domain_add_simple(np, gpio_irq_base);
> + irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
The tzic on imx5 gets 128 irq lines rather than 32 here. The current
code will make any hwirq that is > 32 hit the WARN_ON below in
irq_domain_legacy_revmap().
WARN_ON(hwirq < first_hwirq || hwirq >= first_hwirq + size)
The first_hwirq is 0 and size is 32 in this case.
Changing 32 to 128 seems fixing the problem.
>
> return 0;
> }
> diff --git a/arch/arm/mach-mx5/imx53-dt.c b/arch/arm/mach-mx5/imx53-dt.c
> index 05ebb3e..89de5d4 100644
> --- a/arch/arm/mach-mx5/imx53-dt.c
> +++ b/arch/arm/mach-mx5/imx53-dt.c
> @@ -51,7 +51,7 @@ static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = {
> static int __init imx53_tzic_add_irq_domain(struct device_node *np,
> struct device_node *interrupt_parent)
> {
> - irq_domain_add_simple(np, 0);
> + irq_domain_add_legacy(np, 32, 0, 0, &irq_domain_simple_ops, NULL);
Ditto
Regards,
Shawn
> return 0;
> }
>
> @@ -61,7 +61,7 @@ static int __init imx53_gpio_add_irq_domain(struct device_node *np,
> static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
>
> gpio_irq_base -= 32;
> - irq_domain_add_simple(np, gpio_irq_base);
> + irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
>
> return 0;
> }
next prev parent reply other threads:[~2012-01-31 12:32 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-27 21:35 [PATCH v3 00/25] irq_domain generalization and refinement Grant Likely
2012-01-27 21:35 ` [PATCH v3 01/25] irq_domain: add documentation and MAINTAINERS entry Grant Likely
2012-01-28 18:23 ` Randy Dunlap
2012-01-27 21:35 ` [PATCH v3 02/25] dt: Make irqdomain less verbose Grant Likely
2012-01-27 21:35 ` [PATCH v3 03/25] irq_domain: Make irq_domain structure match powerpc's irq_host Grant Likely
2012-01-27 21:35 ` [PATCH v3 04/25] irq_domain: convert microblaze from irq_host to irq_domain Grant Likely
2012-01-27 21:35 ` [PATCH v3 05/25] irq_domain/powerpc: Use common irq_domain structure instead of irq_host Grant Likely
2012-01-27 21:36 ` [PATCH v3 06/25] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead Grant Likely
2012-01-27 21:36 ` [PATCH v3 07/25] irq_domain/powerpc: Eliminate virq_is_host() Grant Likely
2012-01-27 21:36 ` [PATCH v3 08/25] irq_domain: Move irq_domain code from powerpc to kernel/irq Grant Likely
2012-01-27 21:36 ` [PATCH v3 09/25] irqdomain: remove NO_IRQ from irq domain code Grant Likely
2012-01-27 21:36 ` [PATCH v3 10/25] irq_domain: Remove references to old irq_host names Grant Likely
2012-01-27 21:36 ` [PATCH v3 11/25] irq_domain: Replace irq_alloc_host() with revmap-specific initializers Grant Likely
2012-01-27 21:36 ` [PATCH v3 12/25] irq_domain: Add support for base irq and hwirq in legacy mappings Grant Likely
2012-01-27 21:36 ` [PATCH v3 13/25] irq_domain: Remove 'new' irq_domain in favour of the ppc one Grant Likely
2012-02-03 14:48 ` Cousson, Benoit
2012-02-03 16:42 ` Grant Likely
2012-01-27 21:36 ` [PATCH v3 14/25] irq_domain: Remove irq_domain_add_simple() Grant Likely
2012-01-31 12:45 ` Shawn Guo [this message]
2012-01-31 13:15 ` Rob Herring
2012-01-31 13:58 ` Shawn Guo
2012-02-01 0:08 ` Grant Likely
2012-02-01 5:46 ` [PATCH] irq_domain: fix the irq number of imx5 tzic Shawn Guo
2012-02-02 4:58 ` Grant Likely
2012-01-27 21:36 ` [PATCH v3 15/25] irq_domain: Create common xlate functions that device drivers can use Grant Likely
2012-01-27 21:36 ` [PATCH v3 16/25] irq_domain: constify irq_domain_ops Grant Likely
2012-01-27 21:36 ` [PATCH v3 17/25] irq_domain/c6x: Convert c6x to use generic irq_domain support Grant Likely
2012-01-27 21:36 ` [PATCH v3 18/25] irq_domain/c6x: constify irq_domain structures Grant Likely
2012-01-27 21:36 ` [PATCH v3 19/25] irq_domain/c6x: Use library of xlate functions Grant Likely
2012-01-27 21:36 ` [PATCH v3 20/25] irq_domain/powerpc: constify irq_domain_ops Grant Likely
2012-01-27 21:36 ` [PATCH v3 21/25] irqdomain/powerpc: Replace custom xlate functions with library functions Grant Likely
2012-02-06 5:22 ` Michael Neuling
2012-02-06 6:00 ` Grant Likely
2012-01-27 21:36 ` [PATCH v3 22/25] irq_domain/x86: Convert x86 (embedded) to use common irq_domain Grant Likely
2012-01-28 16:44 ` Sebastian Andrzej Siewior
2012-01-29 0:35 ` Grant Likely
2012-01-29 0:39 ` Grant Likely
2012-01-30 19:58 ` Grant Likely
2012-02-01 14:17 ` Sebastian Andrzej Siewior
2012-02-01 18:06 ` Grant Likely
2012-02-23 19:56 ` Grant Likely
2012-02-23 21:22 ` Sebastian Andrzej Siewior
2012-02-23 21:39 ` Grant Likely
2012-01-27 21:36 ` [PATCH v3 23/25] irq_domain: Include hwirq number in /proc/interrupts Grant Likely
2012-01-27 21:36 ` [PATCH v3 24/25] irq_domain: remove "hint" when allocating irq numbers Grant Likely
2012-02-07 18:07 ` Nicolas Ferre
2012-02-15 15:04 ` Nicolas Ferre
2012-02-15 20:21 ` Grant Likely
2012-02-15 21:50 ` Shawn Guo
2012-02-16 5:32 ` Grant Likely
2012-02-16 6:03 ` Shawn Guo
2012-01-27 21:36 ` [PATCH v3 25/25] irq_domain: mostly eliminate slow-path revmap lookups Grant Likely
2012-02-15 16:36 ` Nicolas Ferre
2012-02-15 20:29 ` Grant Likely
2012-01-28 18:38 ` [PATCH v3 00/25] irq_domain generalization and refinement Rob Herring
2012-01-31 4:53 ` Olof Johansson
2012-02-01 0:07 ` Grant Likely
2012-02-04 22:17 ` Russell King - ARM Linux
2012-02-04 22:31 ` Russell King - ARM Linux
2012-02-05 1:38 ` Tony Lindgren
2012-02-05 16:13 ` Russell King - ARM Linux
2012-02-07 15:26 ` Mark Brown
2012-02-15 20:33 ` Grant Likely
2012-02-05 0:01 ` Benjamin Herrenschmidt
2012-02-06 0:51 ` Rob Herring
2012-02-06 5:56 ` Grant Likely
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