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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-08-29 19:38:33 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-30 08:57:18 +0200 |
| commit | d03abe5882cc4815bf98c0e01a1deafa4a5d6730 (patch) | |
| tree | a255145e80f4f0593b89aef58a20ef497f874c8e /arch/s390/pci/pci_clp.c | |
| parent | s390/pci: split lpf (diff) | |
| download | linux-d03abe5882cc4815bf98c0e01a1deafa4a5d6730.tar.xz linux-d03abe5882cc4815bf98c0e01a1deafa4a5d6730.zip | |
s390/pci: try harder to modify a function
In rare situations a PCI function can report a busy condition
when we issue the modify pci function command. A temporary busy
condition can exceed 1 second but not 2 seconds. Increase the
time until we report an error to 2 seconds. Also increase the
time we sleep between the retries to reduce the load in this
case.
Suggested-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/s390/pci/pci_clp.c')
| -rw-r--r-- | arch/s390/pci/pci_clp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 70db060b4d41..3eaf63a6ecac 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -179,7 +179,7 @@ error: static int clp_set_pci_fn(u32 *fh, u8 nr_dma_as, u8 command) { struct clp_req_rsp_set_pci *rrb; - int rc, retries = 1000; + int rc, retries = 100; rrb = clp_alloc_block(GFP_KERNEL); if (!rrb) @@ -199,7 +199,7 @@ static int clp_set_pci_fn(u32 *fh, u8 nr_dma_as, u8 command) retries--; if (retries < 0) break; - msleep(1); + msleep(20); } } while (rrb->response.hdr.rsp == CLP_RC_SETPCIFN_BUSY); |