From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/fpga/dfl-fme-pr.c | 29 ++++++++++++++---------------
1 files changed, 14 insertions(+), 15 deletions(-)
diff --git a/kernel/drivers/fpga/dfl-fme-pr.c b/kernel/drivers/fpga/dfl-fme-pr.c
index 0b84053..1194c0e 100644
--- a/kernel/drivers/fpga/dfl-fme-pr.c
+++ b/kernel/drivers/fpga/dfl-fme-pr.c
@@ -74,6 +74,7 @@
struct dfl_fme *fme;
unsigned long minsz;
void *buf = NULL;
+ size_t length;
int ret = 0;
u64 v;
@@ -83,9 +84,6 @@
return -EFAULT;
if (port_pr.argsz < minsz || port_pr.flags)
- return -EINVAL;
-
- if (!IS_ALIGNED(port_pr.buffer_size, 4))
return -EINVAL;
/* get fme header region */
@@ -99,12 +97,13 @@
return -EINVAL;
}
- if (!access_ok(VERIFY_READ,
- (void __user *)(unsigned long)port_pr.buffer_address,
- port_pr.buffer_size))
- return -EFAULT;
+ /*
+ * align PR buffer per PR bandwidth, as HW ignores the extra padding
+ * data automatically.
+ */
+ length = ALIGN(port_pr.buffer_size, 4);
- buf = vmalloc(port_pr.buffer_size);
+ buf = vmalloc(length);
if (!buf)
return -ENOMEM;
@@ -141,7 +140,7 @@
fpga_image_info_free(region->info);
info->buf = buf;
- info->count = port_pr.buffer_size;
+ info->count = length;
info->region_id = port_pr.port_id;
region->info = info;
@@ -160,9 +159,6 @@
mutex_unlock(&pdata->lock);
free_exit:
vfree(buf);
- if (copy_to_user((void __user *)arg, &port_pr, minsz))
- return -EFAULT;
-
return ret;
}
@@ -444,10 +440,8 @@
struct dfl_feature *feature)
{
struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
- struct dfl_fme *priv;
mutex_lock(&pdata->lock);
- priv = dfl_fpga_pdata_get_private(pdata);
dfl_fme_destroy_regions(pdata);
dfl_fme_destroy_bridges(pdata);
@@ -472,7 +466,12 @@
return ret;
}
-const struct dfl_feature_ops pr_mgmt_ops = {
+const struct dfl_feature_id fme_pr_mgmt_id_table[] = {
+ {.id = FME_FEATURE_ID_PR_MGMT,},
+ {0}
+};
+
+const struct dfl_feature_ops fme_pr_mgmt_ops = {
.init = pr_mgmt_init,
.uinit = pr_mgmt_uinit,
.ioctl = fme_pr_ioctl,
--
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