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Arm FF-A fix for v7.0

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Fix removing the vm_id argument from ffa_rxtx_unmap(), as the FF-A
 specification mandates this field be zero in all contexts except a
 non-secure physical FF-A instance, where the ID is inherently 0.
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Merge tag 'ffa-fix-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm FF-A fix for v7.0

Fix removing the vm_id argument from ffa_rxtx_unmap(), as the FF-A
specification mandates this field be zero in all contexts except a
non-secure physical FF-A instance, where the ID is inherently 0.

* tag 'ffa-fix-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Remove vm_id argument in ffa_rxtx_unmap()

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2026-03-18 14:05:30 +01:00
commit dfc80d650b
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/firmware/arm_ffa/driver.c
View File

@ -205,12 +205,12 @@ static int ffa_rxtx_map(phys_addr_t tx_buf, phys_addr_t rx_buf, u32 pg_cnt)
return 0;
}
static int ffa_rxtx_unmap(u16 vm_id)
static int ffa_rxtx_unmap(void)
{
ffa_value_t ret;
invoke_ffa_fn((ffa_value_t){
.a0 = FFA_RXTX_UNMAP, .a1 = PACK_TARGET_INFO(vm_id, 0),
.a0 = FFA_RXTX_UNMAP,
}, &ret);
if (ret.a0 == FFA_ERROR)
@ -2097,7 +2097,7 @@ static int __init ffa_init(void)
pr_err("failed to setup partitions\n");
ffa_notifications_cleanup();
ffa_rxtx_unmap(drv_info->vm_id);
ffa_rxtx_unmap();
free_pages:
if (drv_info->tx_buffer)
free_pages_exact(drv_info->tx_buffer, rxtx_bufsz);
@ -2112,7 +2112,7 @@ static void __exit ffa_exit(void)
{
ffa_notifications_cleanup();
ffa_partitions_cleanup();
ffa_rxtx_unmap(drv_info->vm_id);
ffa_rxtx_unmap();
free_pages_exact(drv_info->tx_buffer, drv_info->rxtx_bufsz);
free_pages_exact(drv_info->rx_buffer, drv_info->rxtx_bufsz);
kfree(drv_info);