hmp: Remove "info pcmcia"

This command lists PCMCIA sockets and cards.  Only a few ARM boards
have sockets (akita, borzoi, connex, mainstone, spitz, terrier, tosa,
verdex, z2), the only card is the DSCM-1xxxx Hitachi Microdrive (qdev
"microdrive"), and it is only inserted during machine init, if ever.
So this command doesn't really tell anybody anything new so far.

Moreover, pcmcia_socket_unregister() has a use-after-free bug, flagged
by Coverity.  Has never been used, because there has never been code
to eject a PCMCIA card.

Not worth fixing & converting to QMP.  Remove it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Acked-by: Andreas Färber <afaerber@suse.de>
Message-id: 1411144812-22958-1-git-send-email-armbru@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hmp-commands.hx

@@ -1748,8 +1748,6 @@ show information about active capturing
 show list of VM snapshots
 @item info status
 show the current VM status (running|paused)
-@item info pcmcia
-show guest PCMCIA status
 @item info mice
 show which guest mouse is receiving events
 @item info vnc

hw/ide/microdrive.c

@@ -543,7 +543,6 @@ static int dscm1xxxx_attach(PCMCIACardState *card)
     device_reset(DEVICE(md));
     md_interrupt_update(md);
 
-    card->slot->card_string = "DSCM-1xxxx Hitachi Microdrive";
     return 0;
 }
 

hw/pcmcia/pxa2xx.c

@@ -149,24 +149,11 @@ PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
     s = PXA2XX_PCMCIA(dev);
 
-    if (base == 0x30000000) {
-        s->slot.slot_string = "PXA PC Card Socket 1";
-    } else {
-        s->slot.slot_string = "PXA PC Card Socket 0";
-    }
-
     qdev_init_nofail(dev);
 
     return s;
 }
 
-static void pxa2xx_pcmcia_realize(DeviceState *dev, Error **errp)
-{
-    PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(dev);
-
-    pcmcia_socket_register(&s->slot);
-}
-
 static void pxa2xx_pcmcia_initfn(Object *obj)
 {
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
@@ -262,19 +249,11 @@ void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
     s->cd_irq = cd_irq;
 }
 
-static void pxa2xx_pcmcia_class_init(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-
-    dc->realize = pxa2xx_pcmcia_realize;
-}
-
 static const TypeInfo pxa2xx_pcmcia_type_info = {
     .name = TYPE_PXA2XX_PCMCIA,
     .parent = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(PXA2xxPCMCIAState),
     .instance_init = pxa2xx_pcmcia_initfn,
-    .class_init = pxa2xx_pcmcia_class_init,
 };
 
 static void pxa2xx_pcmcia_register_types(void)

include/hw/pcmcia.h

@@ -8,14 +8,8 @@
 typedef struct PCMCIASocket {
     qemu_irq irq;
     bool attached;
-    const char *slot_string;
-    const char *card_string;
 } PCMCIASocket;
 
-void pcmcia_socket_register(PCMCIASocket *socket);
-void pcmcia_socket_unregister(PCMCIASocket *socket);
-void pcmcia_info(Monitor *mon, const QDict *qdict);
-
 #define TYPE_PCMCIA_CARD "pcmcia-card"
 #define PCMCIA_CARD(obj) \
     OBJECT_CHECK(PCMCIACardState, (obj), TYPE_PCMCIA_CARD)

monitor.c

@@ -25,7 +25,6 @@
 #include "hw/hw.h"
 #include "monitor/qdev.h"
 #include "hw/usb.h"
-#include "hw/pcmcia.h"
 #include "hw/i386/pc.h"
 #include "hw/pci/pci.h"
 #include "sysemu/watchdog.h"
@@ -2791,13 +2790,6 @@ static mon_cmd_t info_cmds[] = {
         .help       = "show the current VM status (running|paused)",
         .mhandler.cmd = hmp_info_status,
     },
-    {
-        .name       = "pcmcia",
-        .args_type  = "",
-        .params     = "",
-        .help       = "show guest PCMCIA status",
-        .mhandler.cmd = pcmcia_info,
-    },
     {
         .name       = "mice",
         .args_type  = "",

vl.c

@@ -63,7 +63,6 @@ int main(int argc, char **argv)
 #include "hw/boards.h"
 #include "sysemu/accel.h"
 #include "hw/usb.h"
-#include "hw/pcmcia.h"
 #include "hw/i386/pc.h"
 #include "hw/isa/isa.h"
 #include "hw/bt.h"
@@ -1407,49 +1406,6 @@ void do_usb_del(Monitor *mon, const QDict *qdict)
     }
 }
 
-/***********************************************************/
-/* PCMCIA/Cardbus */
-
-static struct pcmcia_socket_entry_s {
-    PCMCIASocket *socket;
-    struct pcmcia_socket_entry_s *next;
-} *pcmcia_sockets = 0;
-
-void pcmcia_socket_register(PCMCIASocket *socket)
-{
-    struct pcmcia_socket_entry_s *entry;
-
-    entry = g_malloc(sizeof(struct pcmcia_socket_entry_s));
-    entry->socket = socket;
-    entry->next = pcmcia_sockets;
-    pcmcia_sockets = entry;
-}
-
-void pcmcia_socket_unregister(PCMCIASocket *socket)
-{
-    struct pcmcia_socket_entry_s *entry, **ptr;
-
-    ptr = &pcmcia_sockets;
-    for (entry = *ptr; entry; ptr = &entry->next, entry = *ptr)
-        if (entry->socket == socket) {
-            *ptr = entry->next;
-            g_free(entry);
-        }
-}
-
-void pcmcia_info(Monitor *mon, const QDict *qdict)
-{
-    struct pcmcia_socket_entry_s *iter;
-
-    if (!pcmcia_sockets)
-        monitor_printf(mon, "No PCMCIA sockets\n");
-
-    for (iter = pcmcia_sockets; iter; iter = iter->next)
-        monitor_printf(mon, "%s: %s\n", iter->socket->slot_string,
-                       iter->socket->attached ? iter->socket->card_string :
-                       "Empty");
-}
-
 /***********************************************************/
 /* machine registration */