kernel/linux.git/arch/powerpc/sysdev/fsl_msi.c, branch v6.6.134

powerpc/fsl-soc: hide unused const variable

2024-06-12T09:11:59+00:00

[ Upstream commit 01acaf3aa75e1641442cc23d8fe0a7bb4226efb1 ] vmpic_msi_feature is only used conditionally, which triggers a rare -Werror=unused-const-variable= warning with gcc: arch/powerpc/sysdev/fsl_msi.c:567:37: error: 'vmpic_msi_feature' defined but not used [-Werror=unused-const-variable=] 567 | static const struct fsl_msi_feature vmpic_msi_feature = Hide this one in the same #ifdef as the reference so we can turn on the warning by default. Fixes: 305bcf26128e ("powerpc/fsl-soc: use CONFIG_EPAPR_PARAVIRT for hcalls") Signed-off-by: Arnd Bergmann Reviewed-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/20240403080702.3509288-2-arnd@kernel.org Signed-off-by: Sasha Levin

powerpc/msi: Fix deassociation of MSI descriptors

2022-12-17T10:58:48+00:00

Since 2f2940d16823 ("genirq/msi: Remove filter from msi_free_descs_free_range()"), the core MSI code relies on the msi_desc->irq field to have been cleared before the descriptor can be freed, as it indicates that there is no association with a device anymore. The irq domain code provides this guarantee, and so does s390, which is one of the two architectures not using irq domains for MSIs. Powerpc, however, is missing this particular requirements, leading in a splat and leaked MSI descriptors. Adding the now required irq reset to the handful of powerpc backends that implement MSIs fixes that particular problem. Reported-by: Guenter Roeck Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/70dab88e-6119-0c12-7c6a-61bcbe239f66@roeck-us.net

powerpc/sysdev/fsl_msi: Add missing of_node_put()

2022-09-05T07:30:18+00:00

In fsl_setup_msi_irqs(), use of_node_put() to drop the reference returned by of_parse_phandle(). Fixes: 895d603f945ba ("powerpc/fsl_msi: add support for the fsl, msi property in PCI nodes") Co-authored-by: Miaoqian Lin Signed-off-by: Liang He Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220704145233.278539-1-windhl@126.com

powerpc: Add missing headers

2022-05-08T12:15:40+00:00

Don't inherit headers "by chances" from asm/prom.h, asm/mpc52xx.h, asm/pci.h etc... Include the needed headers, and remove asm/prom.h when it was needed exclusively for pulling necessary headers. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/be8bdc934d152a7d8ee8d1a840d5596e2f7d85e0.1646767214.git.christophe.leroy@csgroup.eu

powerpc/fsl_msi: Use msi_for_each_desc()

2021-12-16T21:22:18+00:00

Replace the about to vanish iterators and make use of the filtering. Signed-off-by: Thomas Gleixner Reviewed-by: Jason Gunthorpe Link: https://lore.kernel.org/r/20211206210748.522641685@linutronix.de

powerpc: Bulk conversion to generic_handle_domain_irq()

2021-08-12T10:39:41+00:00

Wherever possible, replace constructs that match either generic_handle_irq(irq_find_mapping()) or generic_handle_irq(irq_linear_revmap()) to a single call to generic_handle_domain_irq(). Signed-off-by: Marc Zyngier

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05T15:37:17+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman

kernel/irq: Extend lockdep class for request mutex

2017-12-28T11:26:35+00:00

The IRQ code already has support for lockdep class for the lock mutex in an interrupt descriptor. Extend this to add a second class for the request mutex in the descriptor. Not having a class is resulting in false positive splats in some code paths. Signed-off-by: Andrew Lunn Signed-off-by: Thomas Gleixner Acked-by: linus.walleij@linaro.org Cc: grygorii.strashko@ti.com Cc: f.fainelli@gmail.com Link: https://lkml.kernel.org/r/1512234664-21555-1-git-send-email-andrew@lunn.ch

powerpc: Convert to using %pOF instead of full_name

2017-08-23T12:27:04+00:00

Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Anatolij Gustschin Cc: Scott Wood Cc: Kumar Gala Cc: Arnd Bergmann Cc: linuxppc-dev@lists.ozlabs.org Reviewed-by: Tyrel Datwyler Signed-off-by: Michael Ellerman

powerpc: Remove all usages of NO_IRQ

2016-09-20T10:57:12+00:00

NO_IRQ has been == 0 on powerpc for just over ten years (since commit 0ebfff1491ef ("[POWERPC] Add new interrupt mapping core and change platforms to use it")). It's also 0 on most other arches. Although it's fairly harmless, every now and then it causes confusion when a driver is built on powerpc and another arch which doesn't define NO_IRQ. There's at least 6 definitions of NO_IRQ in drivers/, at least some of which are to work around that problem. So we'd like to remove it. This is fairly trivial in the arch code, we just convert: if (irq == NO_IRQ) to if (!irq) if (irq != NO_IRQ) to if (irq) irq = NO_IRQ; to irq = 0; return NO_IRQ; to return 0; And a few other odd cases as well. At least for now we keep the #define NO_IRQ, because there is driver code that uses NO_IRQ and the fixes to remove those will go via other trees. Note we also change some occurrences in PPC sound drivers, drivers/ps3, and drivers/macintosh. Signed-off-by: Michael Ellerman