From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53403) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f8Si8-0001K9-T0 for qemu-devel@nongnu.org; Tue, 17 Apr 2018 11:40:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f8Si7-0005Jm-UA for qemu-devel@nongnu.org; Tue, 17 Apr 2018 11:40:00 -0400 From: Paolo Bonzini Date: Tue, 17 Apr 2018 17:39:44 +0200 Message-Id: <20180417153945.20737-6-pbonzini@redhat.com> In-Reply-To: <20180417153945.20737-1-pbonzini@redhat.com> References: <20180417153945.20737-1-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 5/6] atapi: call ide_set_irq before ide_transfer_start List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: jsnow@redhat.com, qemu-block@nongnu.org The ATAPI_INT_REASON_IO interrupt is raised when I/O starts, but in the AHCI case ide_set_irq was actually called at the end of a mutual recursion. Move it early, with the side effect that ide_transfer_start becomes a tail call in ide_atapi_cmd_reply_end. Signed-off-by: Paolo Bonzini --- hw/ide/atapi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c index c0509c8bf5..7168ff55a7 100644 --- a/hw/ide/atapi.c +++ b/hw/ide/atapi.c @@ -287,6 +287,7 @@ void ide_atapi_cmd_reply_end(IDEState *s) } else { /* a new transfer is needed */ s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO; + ide_set_irq(s->bus); byte_count_limit = atapi_byte_count_limit(s); trace_ide_atapi_cmd_reply_end_bcl(s, byte_count_limit); size = s->packet_transfer_size; @@ -304,13 +305,12 @@ void ide_atapi_cmd_reply_end(IDEState *s) if (size > (s->cd_sector_size - s->io_buffer_index)) size = (s->cd_sector_size - s->io_buffer_index); } + trace_ide_atapi_cmd_reply_end_new(s, s->status); s->packet_transfer_size -= size; s->elementary_transfer_size -= size; s->io_buffer_index += size; ide_transfer_start(s, s->io_buffer + s->io_buffer_index - size, size, ide_atapi_cmd_reply_end); - ide_set_irq(s->bus); - trace_ide_atapi_cmd_reply_end_new(s, s->status); } } } -- 2.17.0