From: Bernhard R Link Date: Fri, 10 Mar 2006 09:23:13 +0000 (-0800) Subject: [SPARC64]: fix sparc_floppy_irq's auxio_register reseting X-Git-Tag: v2.6.17-rc1~1184^2~229 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=94bbc1763b6b6d20d5cfa70c41cda23af27f8b55;p=linux-2.6 [SPARC64]: fix sparc_floppy_irq's auxio_register reseting The patch "[SPARC64]: Get rid of fast IRQ feature" moved the the code from arch/sparc64/kernel/entry.S: lduba [%g7] ASI_PHYS_BYPASS_EC_E, %g5 or %g5, AUXIO_AUX1_FTCNT, %g5 stba %g5, [%g7] ASI_PHYS_BYPASS_EC_E andn %g5, AUXIO_AUX1_FTCNT, %g5 stba %g5, [%g7] ASI_PHYS_BYPASS_EC_E to arch/sparc64/kernel/irq.c: val = readb(auxio_register); val |= AUXIO_AUX1_FTCNT; writeb(val, auxio_register); val &= AUXIO_AUX1_FTCNT; writeb(val, auxio_register); This looks like it it missing a bitwise not, which is reintroduced by this patch. Due to lack of a floppy device, I could not test it, but it looks evident. Signed-off-by: Bernhard R Link Signed-off-by: David S. Miller --- diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index 233526ba3a..f7490ef629 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -694,7 +694,7 @@ irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs) val = readb(auxio_register); val |= AUXIO_AUX1_FTCNT; writeb(val, auxio_register); - val &= AUXIO_AUX1_FTCNT; + val &= ~AUXIO_AUX1_FTCNT; writeb(val, auxio_register); doing_pdma = 0;