Anyone with a SunBlade100 or SunBlade150 trying to use kernels built with gcc-4.1.x or later and seeing hangs should try out this patch. GCC-4.1.x and later optimize away this poorly constructed delay, so there is no delay, and the chip hangs. I'll put a proper version of this fix, using a udelay(), upstream very soon. Thanks. diff --git a/drivers/video/aty/mach64_ct.c b/drivers/video/aty/mach64_ct.c index f3b487b..96e91ee 100644 --- a/drivers/video/aty/mach64_ct.c +++ b/drivers/video/aty/mach64_ct.c @@ -614,7 +614,8 @@ static void aty_resume_pll_ct(const struct fb_info *info, * helps for Rage Mobilities that sometimes crash when * we switch to sclk. (Daniel Mantione, 13-05-2003) */ - for (i=0;i<=0x1ffff;i++); + for (i=0;i<=0x1ffff;i++) + barrier(); } aty_st_pll_ct(PLL_REF_DIV, pll->ct.pll_ref_div, par); - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
