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From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Stefano Stabellini" <sstabellini@kernel.org>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	qemu-trivial@nongnu.org, "Paul Durrant" <paul@xen.org>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	xen-devel@lists.xenproject.org,
	"Anthony Perard" <anthony.perard@citrix.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: [PATCH] hw/i386/xen: Remove dead code
Date: Tue,  2 Feb 2021 16:56:44 +0100	[thread overview]
Message-ID: <20210202155644.998812-1-philmd@redhat.com> (raw)

'drivers_blacklisted' is never accessed, remove it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/i386/xen/xen_platform.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c
index 7c4db35debb..01ae1fb1618 100644
--- a/hw/i386/xen/xen_platform.c
+++ b/hw/i386/xen/xen_platform.c
@@ -60,7 +60,6 @@ struct PCIXenPlatformState {
     MemoryRegion bar;
     MemoryRegion mmio_bar;
     uint8_t flags; /* used only for version_id == 2 */
-    int drivers_blacklisted;
     uint16_t driver_product_version;
 
     /* Log from guest drivers */
@@ -245,18 +244,10 @@ static void platform_fixed_ioport_writeb(void *opaque, uint32_t addr, uint32_t v
 
 static uint32_t platform_fixed_ioport_readw(void *opaque, uint32_t addr)
 {
-    PCIXenPlatformState *s = opaque;
-
     switch (addr) {
     case 0:
-        if (s->drivers_blacklisted) {
-            /* The drivers will recognise this magic number and refuse
-             * to do anything. */
-            return 0xd249;
-        } else {
-            /* Magic value so that you can identify the interface. */
-            return 0x49d2;
-        }
+        /* Magic value so that you can identify the interface. */
+        return 0x49d2;
     default:
         return 0xffff;
     }
-- 
2.26.2



             reply	other threads:[~2021-02-02 16:14 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-02 15:56 Philippe Mathieu-Daudé [this message]
2021-02-02 16:05 ` [PATCH] hw/i386/xen: Remove dead code Paul Durrant
2021-02-02 16:39 ` Paolo Bonzini
2021-02-13 22:37 ` Laurent Vivier

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