From patchwork Tue Sep 23 15:43:23 2008 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [HACK] powerpc: quick hack to get a functional eHEA with hardirq preemption, eHCA is close From: Jan-Bernd Themann X-Patchwork-Id: 1116 Message-Id: <200809231743.23828.ossthema@de.ibm.com> To: Sebastien Dugue Cc: Christoph Raisch , Benjamin Herrenschmidt , gilles.carry@ext.bull.net, Jan-Bernd Themann , jean-pierre.dion@bull.net, linux-kernel , Linux-rt , linux-ppc , netdev@vger.kernel.org, Thomas Q Klein , tinytim@us.ibm.com, Hoang-Nam Nguyen Date: Tue, 23 Sep 2008 17:43:23 +0200 Hi, I think these are the "functional" changes that need to be included in the ibmebus driver. We'll add a RT flag in the final version to enable these changes only for RT-Linux for now. Ben, can you / your team look into the implementation of the set_irq_type functionality needed for XICS? Regards, Jan-Bernd & Christoph --- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff -Nurp b/arch/powerpc/kernel/ibmebus.c a/arch/powerpc/kernel/ibmebus.c --- b/arch/powerpc/kernel/ibmebus.c 2008-09-22 00:29:55.000000000 +0200 +++ a/arch/powerpc/kernel/ibmebus.c 2008-09-23 12:04:53.000000000 +0200 @@ -216,12 +216,16 @@ int ibmebus_request_irq(u32 ist, irq_han unsigned long irq_flags, const char *devname, void *dev_id) { + int ret; unsigned int irq = irq_create_mapping(NULL, ist); if (irq == NO_IRQ) return -EINVAL; - return request_irq(irq, handler, irq_flags, devname, dev_id); + ret = request_irq(irq, handler, irq_flags, devname, dev_id); + set_irq_type(irq, IRQ_TYPE_EDGE_RISING); + + return ret; } EXPORT_SYMBOL(ibmebus_request_irq);