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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-01-31 18:54:03 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-02-14 14:55:16 (GMT) |
| commit | add09d61fee72d7a346051332b6d99f18989504c (patch) | |
| tree | caece49a2cc56151048707b3f3eef5aa1baef8bb /arch | |
| parent | bf4ec24ff8ab54d56c835eb61212a1e87270d7c8 (diff) | |
| download | linux-add09d61fee72d7a346051332b6d99f18989504c.tar.xz | |
s390/pci: cleanup clp page allocation
Use the __get_free_pages wrapper in clp_alloc_block. Also change the
allocation to use one page only. This page is used as CLP response
block e.g. to list available pci functions. Using one page we can
list > 250 pci functions at once and we have code to loop around this
CLP command (if not all functions fit into to the CLP block) already
in place.
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/include/asm/clp.h | 2 | ||||
| -rw-r--r-- | arch/s390/pci/pci_clp.c | 3 |
2 files changed, 2 insertions, 3 deletions
diff --git a/arch/s390/include/asm/clp.h b/arch/s390/include/asm/clp.h index 6c3aecc..a0e71a5 100644 --- a/arch/s390/include/asm/clp.h +++ b/arch/s390/include/asm/clp.h @@ -2,7 +2,7 @@ #define _ASM_S390_CLP_H /* CLP common request & response block size */ -#define CLP_BLK_SIZE (PAGE_SIZE * 2) +#define CLP_BLK_SIZE PAGE_SIZE struct clp_req_hdr { u16 len; diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 702bd26..f339fe2f 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -37,8 +37,7 @@ static inline u8 clp_instr(void *data) static void *clp_alloc_block(void) { - struct page *page = alloc_pages(GFP_KERNEL, get_order(CLP_BLK_SIZE)); - return (page) ? page_address(page) : NULL; + return (void *) __get_free_pages(GFP_KERNEL, get_order(CLP_BLK_SIZE)); } static void clp_free_block(void *ptr) |