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author | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-02 10:33:48 -0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-02 10:33:48 -0400 |
commit | bee3f412d6fc94011850f16cddce745d529411a5 (patch) | |
tree | 01b1823a3bc0cb760129ed15f7ec027a36edc48b /arch/powerpc/sysdev/xics/icp-opal.c | |
parent | d597580d373774b1bdab84b3d26ff0b55162b916 (diff) | |
parent | 476e75a44b56038bee9207242d4bc718f6b4de06 (diff) |
Merge branch 'parisc-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux into uaccess.parisc
Diffstat (limited to 'arch/powerpc/sysdev/xics/icp-opal.c')
-rw-r--r-- | arch/powerpc/sysdev/xics/icp-opal.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/xics/icp-opal.c b/arch/powerpc/sysdev/xics/icp-opal.c index f9670eabfcfa..b53f80f0b4d8 100644 --- a/arch/powerpc/sysdev/xics/icp-opal.c +++ b/arch/powerpc/sysdev/xics/icp-opal.c @@ -91,6 +91,16 @@ static unsigned int icp_opal_get_irq(void) static void icp_opal_set_cpu_priority(unsigned char cppr) { + /* + * Here be dragons. The caller has asked to allow only IPI's and not + * external interrupts. But OPAL XIVE doesn't support that. So instead + * of allowing no interrupts allow all. That's still not right, but + * currently the only caller who does this is xics_migrate_irqs_away() + * and it works in that case. + */ + if (cppr >= DEFAULT_PRIORITY) + cppr = LOWEST_PRIORITY; + xics_set_base_cppr(cppr); opal_int_set_cppr(cppr); iosync(); |