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From: David Hildenbrand <david@redhat.com>
To: kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	rkrcmar@redhat.com, Peter Xu <peterx@redhat.com>,
	david@redhat.com
Subject: [PATCH v3 22/24] KVM: x86: set data directly in picdev_read()
Date: Fri,  7 Apr 2017 10:50:39 +0200	[thread overview]
Message-ID: <20170407085041.5257-23-david@redhat.com> (raw)
In-Reply-To: <20170407085041.5257-1-david@redhat.com>

Now it looks almost as picdev_write().

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 arch/x86/kvm/i8259.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 5b5c87f..d481f33 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -484,7 +484,7 @@ static int picdev_write(struct kvm_pic *s,
 static int picdev_read(struct kvm_pic *s,
 		       gpa_t addr, int len, void *val)
 {
-	unsigned char data = 0;
+	unsigned char *data = (unsigned char *)val;
 
 	if (len != 1) {
 		memset(val, 0, len);
@@ -497,19 +497,18 @@ static int picdev_read(struct kvm_pic *s,
 	case 0xa0:
 	case 0xa1:
 		pic_lock(s);
-		data = pic_ioport_read(&s->pics[addr >> 7], addr);
+		*data = pic_ioport_read(&s->pics[addr >> 7], addr);
 		pic_unlock(s);
 		break;
 	case 0x4d0:
 	case 0x4d1:
 		pic_lock(s);
-		data = elcr_ioport_read(&s->pics[addr & 1], addr);
+		*data = elcr_ioport_read(&s->pics[addr & 1], addr);
 		pic_unlock(s);
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}
-	*(unsigned char *)val = data;
 	return 0;
 }
 
-- 
2.9.3

  parent reply	other threads:[~2017-04-07  8:52 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-07  8:50 [PATCH v3 00/24] pic/ioapic/irqchip cleanups + minor fixes David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 01/24] KVM: x86: race between KVM_SET_GSI_ROUTING and KVM_CREATE_IRQCHIP David Hildenbrand
2017-04-24 22:39   ` Steve Rutherford
2017-04-25 12:34     ` David Hildenbrand
2017-04-25 14:58       ` Radim Krčmář
2017-04-25 19:03     ` [PATCH] KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING David Hildenbrand
2017-04-25 19:38       ` Steve Rutherford
2017-04-25 19:59       ` Radim Krčmář
2017-04-26  8:40         ` David Hildenbrand
2017-04-26 14:27           ` Radim Krčmář
2017-04-26 15:21             ` David Hildenbrand
2017-04-26 20:47               ` Radim Krčmář
2017-04-26 12:33       ` kbuild test robot
2017-04-26 14:24         ` Radim Krčmář
2017-04-07  8:50 ` [PATCH v3 02/24] KVM: x86: new irqchip mode KVM_IRQCHIP_INIT_IN_PROGRESS David Hildenbrand
2017-04-12 18:26   ` Radim Krčmář
2017-04-12 19:55     ` David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 03/24] KVM: x86: check against irqchip_mode in kvm_set_routing_entry() David Hildenbrand
2017-04-12 18:36   ` Radim Krčmář
2017-04-12 19:56     ` David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 04/24] KVM: x86: check against irqchip_mode in pic_in_kernel() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 05/24] KVM: x86: check against irqchip_mode in ioapic_in_kernel() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 06/24] KVM: x86: get rid of pic_irqchip() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 07/24] KVM: x86: get rid of ioapic_irqchip() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 08/24] KVM: x86: use ioapic_in_kernel() to check for ioapic existence David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 09/24] KVM: x86: remove duplicate checks for ioapic David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 10/24] KVM: x86: convert kvm_(set|get)_ioapic() into void David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 11/24] KVM: x86: don't take kvm->irq_lock when creating IRQCHIP David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 12/24] KVM: x86: push usage of slots_lock down David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 13/24] KVM: x86: KVM_IRQCHIP_PIC_MASTER only has 8 pins David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 14/24] KVM: x86: remove all-vcpu request from kvm_ioapic_init() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 15/24] KVM: x86: directly call kvm_make_scan_ioapic_request() in ioapic.c David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 16/24] KVM: x86: rename kvm_vcpu_request_scan_ioapic() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 17/24] KVM: x86: drop goto label in kvm_set_routing_entry() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 18/24] KVM: x86: cleanup return handling in setup_routing_entry() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 19/24] KVM: x86: simplify pic_unlock() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 20/24] KVM: x86: make kvm_pic_reset() static David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 21/24] KVM: x86: drop picdev_in_range() David Hildenbrand
2017-04-07  8:50 ` David Hildenbrand [this message]
2017-04-07  8:50 ` [PATCH v3 23/24] KVM: x86: simplify pic_ioport_read() David Hildenbrand
2017-04-07  8:50 ` [PATCH v3 24/24] KVM: x86: use irqchip_kernel() to check for pic+ioapic David Hildenbrand
2017-04-12 18:58 ` [PATCH v3 00/24] pic/ioapic/irqchip cleanups + minor fixes Radim Krčmář
2017-04-12 19:59   ` David Hildenbrand

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