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fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc 

On ppc, sparc, and sparc64, the value of the FW_CFG_BOOT_DEVICE 16bit
fw_cfg entry is repeatedly modified from a series of callbacks, which
currently results in the previous value's dynamically allocated memory
being leaked.

This patch switches updating to the new fw_cfg_modify_i16() call, which
does not cause memory leaks.

Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gabriel L. Somlo 2015-06-08 14:10:45 -04:00 committed by Gerd Hoffmann
parent 1edd34b638
commit 48779e5018
4 changed files with 4 additions and 4 deletions
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2
hw/ppc/mac_newworld.c
View File

@ -119,7 +119,7 @@ static const MemoryRegionOps unin_ops = {
static void fw_cfg_boot_set(void *opaque, const char *boot_device,
Error **errp)
{
fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
}
static uint64_t translate_kernel_address(void *opaque, uint64_t addr)

2
hw/ppc/mac_oldworld.c
View File

@ -52,7 +52,7 @@
static void fw_cfg_boot_set(void *opaque, const char *boot_device,
Error **errp)
{
fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
}
static uint64_t translate_kernel_address(void *opaque, uint64_t addr)

2
hw/sparc/sun4m.c
View File

@ -124,7 +124,7 @@ void DMA_register_channel (int nchan,
static void fw_cfg_boot_set(void *opaque, const char *boot_device,
Error **errp)
{
fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
}
static void nvram_init(Nvram *nvram, uint8_t *macaddr,

2
hw/sparc64/sun4u.c
View File

@ -127,7 +127,7 @@ void DMA_register_channel (int nchan,
static void fw_cfg_boot_set(void *opaque, const char *boot_device,
Error **errp)
{
fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
}
static int sun4u_NVRAM_set_params(Nvram *nvram, uint16_t NVRAM_size,