From 5f92c329364c0bf2d3a356da5e8759fbe349f9d1 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 30 Aug 2007 22:27:28 -0700 Subject: [SPARC64]: Fix several bugs in MSI handling. 1) sun4{u,v}_build_msi() have improper return value handling. We should always return negative error codes, instead of using the magic value "0" which could in fact be a valid MSI number. 2) sun4{u,v}_build_msi() should return -ENOMEM instead of calling prom_prom() halt with kzalloc() of the interrupt data fails. 3) We 'remembered' the MSI number using a singleton in the struct device archdata area, this doesn't work for MSI-X which can cause multiple MSIs assosciated with one device. Delete that archdata member, and instead store the MSI number in the IRQ chip data area. Signed-off-by: David S. Miller --- include/asm-sparc64/device.h | 2 -- include/asm-sparc64/irq.h | 3 +++ 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-sparc64/device.h b/include/asm-sparc64/device.h index d5a4559b955..5111e8717be 100644 --- a/include/asm-sparc64/device.h +++ b/include/asm-sparc64/device.h @@ -16,8 +16,6 @@ struct dev_archdata { struct device_node *prom_node; struct of_device *op; - - unsigned int msi_num; }; #endif /* _ASM_SPARC64_DEVICE_H */ diff --git a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h index c041e10ae7d..c00ad152771 100644 --- a/include/asm-sparc64/irq.h +++ b/include/asm-sparc64/irq.h @@ -53,6 +53,9 @@ extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p, extern void sun4v_destroy_msi(unsigned int virt_irq); extern unsigned int sbus_build_irq(void *sbus, unsigned int ino); +extern void sparc64_set_msi(unsigned int virt_irq, u32 msi); +extern u32 sparc64_get_msi(unsigned int virt_irq); + extern void fixup_irqs(void); static __inline__ void set_softint(unsigned long bits) -- cgit v1.2.3