kernel/linux.git/arch/powerpc/sysdev, branch v6.18.21

powerpc, ocxl: Fix extraction of struct xive_irq_data

2025-10-13T04:10:55+00:00

Commit cc0cc23babc9 ("powerpc/xive: Untangle xive from child interrupt controller drivers") changed xive_irq_data to be stashed to chip_data instead of handler_data. However, multiple places are still attempting to read xive_irq_data from handler_data and get a NULL pointer deference bug. Update them to read xive_irq_data from chip_data. Non-XIVE files which touch xive_irq_data seem quite strange to me, especially the ocxl driver. I think there ought to be an alternative platform-independent solution, instead of touching XIVE's data directly. Therefore, I think this whole thing should be cleaned up. But perhaps I just misunderstand something. In any case, this cleanup would not be trivial; for now, just get things working again. Fixes: cc0cc23babc9 ("powerpc/xive: Untangle xive from child interrupt controller drivers") Reported-by: Ritesh Harjani (IBM) Closes: https://lore.kernel.org/linuxppc-dev/68e48df8.170a0220.4b4b0.217d@mx.google.com/ Signed-off-by: Nam Cao Reviewed-by: Ganesh Goudar Acked-by: Andrew Donnellan # ocxl Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20251008081359.1382699-1-namcao@linutronix.de

powerpc/xive: Untangle xive from child interrupt controller drivers

2025-09-06T12:03:18+00:00

xive-specific data is stored in handler_data. This creates a mess, as xive has to rely on child interrupt controller drivers to clean up this data, as was done by 9a014f45688 ("powerpc/pseries/pci: Add a msi_free() handler to clear XIVE data"). Instead, store xive-specific data in chip_data and untangle the child drivers. Signed-off-by: Nam Cao Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/83968073022a4cc211dcbd0faccd20ec05e58c3e.1754903590.git.namcao@linutronix.de

powerpc/cpm2: Drop legacy-of-mm-gpiochip.h header

2025-09-06T10:35:26+00:00

Remove legacy-of-mm-gpiochip.h header file. The above mentioned file provides an OF API that's deprecated. There is no agnostic alternatives to it and we have to open code the logic which was hidden behind of_mm_gpiochip_add_data(). Note, most of the GPIO drivers are using their own labeling schemas and resource retrieval that only a few may gain of the code deduplication, so whenever alternative is appear we can move drivers again to use that one. As a side effect this change fixes a potential memory leak on an error path, if of_mm_gpiochip_add_data() fails. [text copied from commit 34064c8267a6 ("powerpc/8xx: Drop legacy-of-mm-gpiochip.h header")] Signed-off-by: Christophe Leroy Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/2662f24c539db393f11b27f0feae2dc14bb2f08f.1755518891.git.christophe.leroy@csgroup.eu

powerpc: Use dev_fwnode()

2025-08-20T08:23:10+00:00

irq_domain_create_simple() takes fwnode as the first argument. It can be extracted from the struct device using dev_fwnode() helper instead of using of_node with of_fwnode_handle(). So use the dev_fwnode() helper. Signed-off-by: Jiri Slaby (SUSE) Acked-by: Christophe Leroy Link: https://lore.kernel.org/all/4bc0e1ca-a523-424a-8759-59e353317fba@kernel.org/ Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250723062842.1831271-1-jirislaby@kernel.org

treewide: rename GPIO set callbacks back to their original names

2025-08-07T08:07:06+00:00

The conversion of all GPIO drivers to using the .set_rv() and .set_multiple_rv() callbacks from struct gpio_chip (which - unlike their predecessors - return an integer and allow the controller drivers to indicate failures to users) is now complete and the legacy ones have been removed. Rename the new callbacks back to their original names in one sweeping change. Signed-off-by: Bartosz Golaszewski

powerpc: sysdev: use lock guard for mutex

2025-06-23T04:27:11+00:00

use guard(mutex) for scope based resource management of mutex This would make the code simpler and easier to maintain. More details on lock guards can be found at https://lore.kernel.org/all/20230612093537.614161713@infradead.org/T/#u Reviewed-by: Srikar Dronamraju Signed-off-by: Shrikanth Hegde Tested-by: Venkat Rao Bagalkote Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250505075333.184463-7-sshegde@linux.ibm.com

Merge tag 'irq-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-05-27T15:07:32+00:00

Pull irq cleanups from Thomas Gleixner: "A set of cleanups for the generic interrupt subsystem: - Consolidate on one set of functions for the interrupt domain code to get rid of pointlessly duplicated code with only marginal different semantics. - Update the documentation accordingly and consolidate the coding style of the irqdomain header" * tag 'irq-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits) irqdomain: Consolidate coding style irqdomain: Fix kernel-doc and add it to Documentation Documentation: irqdomain: Update it Documentation: irq-domain.rst: Simple improvements Documentation: irq/concepts: Minor improvements Documentation: irq/concepts: Add commas and reflow irqdomain: Improve kernel-docs of functions irqdomain: Make struct irq_domain_info variables const irqdomain: Use irq_domain_instantiate()'s return value as initializers irqdomain: Drop irq_linear_revmap() pinctrl: keembay: Switch to irq_find_mapping() irqchip/armada-370-xp: Switch to irq_find_mapping() gpu: ipu-v3: Switch to irq_find_mapping() gpio: idt3243x: Switch to irq_find_mapping() sh: Switch to irq_find_mapping() powerpc: Switch to irq_find_mapping() irqdomain: Drop irq_domain_add_*() functions powerpc: Switch irq_domain_add_nomap() to use fwnode thermal: Switch to irq_domain_create_linear() soc: Switch to irq_domain_create_*() ...

powerpc: Switch to irq_find_mapping()

2025-05-16T19:06:12+00:00

irq_linear_revmap() is deprecated, so remove all its uses and supersede them by an identical call to irq_find_mapping(). [ tglx: Fix up subject prefix ] Signed-off-by: Jiri Slaby (SUSE) Signed-off-by: Thomas Gleixner Acked-by: Christophe Leroy # for 8xx Link: https://lore.kernel.org/all/20250319092951.37667-42-jirislaby@kernel.org

powerpc: Switch to irq_domain_create_*()

2025-05-16T19:06:11+00:00

irq_domain_add_*() interfaces are going away as being obsolete now. Switch to the preferred irq_domain_create_*() ones. Those differ in the node parameter: They take more generic struct fwnode_handle instead of struct device_node. Therefore, of_fwnode_handle() is added around the original parameter. Note some of the users can likely use dev->fwnode directly instead of indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not guaranteed to be set for all, so this has to be investigated on case to case basis (by people who can actually test with the HW). [ tglx: Fix up subject prefix ] Signed-off-by: Jiri Slaby (SUSE) Signed-off-by: Thomas Gleixner Reviewed-by: Christophe Leroy # For 8xx Link: https://lore.kernel.org/all/20250319092951.37667-33-jirislaby@kernel.org

powerpc: sysdev/gpio: use new line value setter callbacks

2025-05-04T03:34:37+00:00

struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Reviewed-by: Linus Walleij Reviewed-by: Christophe Leroy Signed-off-by: Bartosz Golaszewski Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250502-gpiochip-set-rv-powerpc-v2-1-488e43e325bf@linaro.org