Both code sections responsible for enabling/disabling underlying
device write protection are almost identical to each other. To avoid
code duplication move them into a separate routine and adjust the rest
of the code accordignly.
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
arch/arm/mach-imx/imx-bbu-internal.c | 62 +++++++++++++++++++---------
1 file changed, 42 insertions(+), 20 deletions(-)
diff --git a/arch/arm/mach-imx/imx-bbu-internal.c b/arch/arm/mach-imx/imx-bbu-internal.c
index 318efd88e..eb1c459b2 100644
--- a/arch/arm/mach-imx/imx-bbu-internal.c
+++ b/arch/arm/mach-imx/imx-bbu-internal.c
@@ -44,6 +44,41 @@ struct imx_internal_bbu_handler {
enum filetype expected_type;
};
+static bool
+imx_bbu_erase_required(struct imx_internal_bbu_handler *imx_handler)
+{
+ return imx_handler->handler.flags & IMX_INTERNAL_FLAG_ERASE;
+}
+
+static int imx_bbu_protect(int fd, struct imx_internal_bbu_handler *imx_handler,
+ const char *devicefile, int offset, int image_len,
+ int prot)
+{
+ const char *prefix = prot ? "" : "un";
+ int ret;
+
+ if (!imx_bbu_erase_required(imx_handler))
+ return 0;
+
+ pr_debug("%s: %sprotecting %s from 0x%08x to 0x%08x\n", __func__,
+ prefix, devicefile, offset, image_len);
+
+ ret = protect(fd, image_len, offset, prot);
+ if (ret) {
+ /*
+ * If protect() is not implemented for this device,
+ * just report success
+ */
+ if (ret == -ENOSYS)
+ return 0;
+
+ pr_err("%sprotecting %s failed with %s\n", prefix, devicefile,
+ strerror(-ret));
+ }
+
+ return ret;
+}
+
/*
* Actually write an image to the target device, eventually keeping a
* DOS partition table on the device
@@ -67,16 +102,12 @@ static int imx_bbu_write_device(struct imx_internal_bbu_handler *imx_handler,
if (imx_handler->handler.flags & IMX_BBU_FLAG_KEEP_HEAD)
offset += imx_handler->flash_header_offset;
- if (imx_handler->handler.flags & IMX_INTERNAL_FLAG_ERASE) {
- pr_debug("%s: unprotecting %s from 0x%08x to 0x%08x\n", __func__,
- devicefile, offset, image_len);
- ret = protect(fd, image_len, offset, 0);
- if (ret && ret != -ENOSYS) {
- pr_err("unprotecting %s failed with %s\n", devicefile,
- strerror(-ret));
- goto err_close;
- }
+ ret = imx_bbu_protect(fd, imx_handler, devicefile, offset,
+ image_len, 0);
+ if (ret)
+ goto err_close;
+ if (imx_bbu_erase_required(imx_handler)) {
pr_debug("%s: erasing %s from 0x%08x to 0x%08x\n", __func__,
devicefile, offset, image_len);
ret = erase(fd, image_len, offset);
@@ -91,17 +122,8 @@ static int imx_bbu_write_device(struct imx_internal_bbu_handler *imx_handler,
if (ret < 0)
goto err_close;
- if (imx_handler->handler.flags & IMX_INTERNAL_FLAG_ERASE) {
- pr_debug("%s: protecting %s from 0x%08x to 0x%08x\n", __func__,
- devicefile, offset, image_len);
- ret = protect(fd, image_len, offset, 1);
- if (ret && ret != -ENOSYS) {
- pr_err("protecting %s failed with %s\n", devicefile,
- strerror(-ret));
- }
- }
-
- ret = 0;
+ imx_bbu_protect(fd, imx_handler, devicefile, offset,
+ image_len, 1);
err_close:
close(fd);
--
2.17.1
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