[PATCH 2/5] firmware: google: memconsole: Use devm_memremap()

[Stephen Boyd]

Use the devm version of memremap so that we can delete the unmapping
code in driver remove, but more importantly so that we can unmap this
memory region if memconsole_sysfs_init() errors out for some reason.

Cc: Wei-Ning Huang <wnhuang@xxxxxxxxxxxx>
Cc: Julius Werner <jwerner@xxxxxxxxxxxx>
Cc: Brian Norris <briannorris@xxxxxxxxxxxx>
Cc: Samuel Holland <samuel@xxxxxxxxxxxx>
Cc: Guenter Roeck <groeck@xxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
---
 drivers/firmware/google/memconsole-coreboot.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/firmware/google/memconsole-coreboot.c b/drivers/firmware/google/memconsole-coreboot.c
index 86331807f1d5..0b29b27b86f5 100644
--- a/drivers/firmware/google/memconsole-coreboot.c
+++ b/drivers/firmware/google/memconsole-coreboot.c
@@ -85,7 +85,7 @@ static int memconsole_probe(struct coreboot_device *dev)
 
 	/* Read size only once to prevent overrun attack through /dev/mem. */
 	cbmem_console_size = tmp_cbmc->size_dont_access_after_boot;
-	cbmem_console = memremap(dev->cbmem_ref.cbmem_addr,
+	cbmem_console = devm_memremap(&dev->dev, dev->cbmem_ref.cbmem_addr,
 				 cbmem_console_size + sizeof(*cbmem_console),
 				 MEMREMAP_WB);
 	memunmap(tmp_cbmc);
@@ -102,9 +102,6 @@ static int memconsole_remove(struct coreboot_device *dev)
 {
 	memconsole_exit();
 
-	if (cbmem_console)
-		memunmap(cbmem_console);
-
 	return 0;
 }
 
-- 
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