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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-08-21 11:27:29 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-08-21 11:27:29 -0400 |
| commit | e9dc122166b8d863d3057a66ada04838e5548e52 (patch) | |
| tree | 749e15bf719b64bf9113db7acd8e043d9742cb26 /arch/powerpc/sysdev/qe_lib/qe.c | |
| parent | 560ab42ef923aaf2e4347315bdfcc74b2708972c (diff) | |
| parent | 405d8f8b1d936414da2093d4149ff790ff3f84a5 (diff) | |
| download | kernel-crypto-e9dc122166b8d863d3057a66ada04838e5548e52.tar.gz kernel-crypto-e9dc122166b8d863d3057a66ada04838e5548e52.tar.xz kernel-crypto-e9dc122166b8d863d3057a66ada04838e5548e52.zip | |
Merge branch 'nfs-for-2.6.32' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 into for-2.6.32-incoming
Conflicts:
net/sunrpc/cache.c
Diffstat (limited to 'arch/powerpc/sysdev/qe_lib/qe.c')
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c index b28b0e512d6..237e3654f48 100644 --- a/arch/powerpc/sysdev/qe_lib/qe.c +++ b/arch/powerpc/sysdev/qe_lib/qe.c @@ -112,6 +112,7 @@ int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input) { unsigned long flags; u8 mcn_shift = 0, dev_shift = 0; + u32 ret; spin_lock_irqsave(&qe_lock, flags); if (cmd == QE_RESET) { @@ -139,11 +140,13 @@ int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input) } /* wait for the QE_CR_FLG to clear */ - while(in_be32(&qe_immr->cp.cecr) & QE_CR_FLG) - cpu_relax(); + ret = spin_event_timeout((in_be32(&qe_immr->cp.cecr) & QE_CR_FLG) == 0, + 100, 0); + /* On timeout (e.g. failure), the expression will be false (ret == 0), + otherwise it will be true (ret == 1). */ spin_unlock_irqrestore(&qe_lock, flags); - return 0; + return ret == 1; } EXPORT_SYMBOL(qe_issue_cmd); |