A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 02:32:09 -04:00
Code Issues Projects Releases Packages Wiki Activity

[SPARC64]: Fix several bugs in MSI handling.

Browse source 
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 <[email protected]>
This commit is contained in:
David S. Miller 2007-08-30 22:27:28 -07:00
commit 5f92c32936
5 changed files with 33 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/asm-sparc64/device.h
View file

@ -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 */

3
include/asm-sparc64/irq.h
View file

@ -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)