HID: bpf: fix gcc warning and unify __u64 into u64

I've got multiple reports of:
error: cast from pointer to integer of different size
[-Werror=pointer-to-int-cast].

Let's use the same trick than kernel/bpf/helpers.c to shut up that warning.

Even if we were on an architecture with addresses on more than 64 bits,
this isn't much of an issue as the address is not used as a pointer,
but as an hash and the caller is not supposed to go back to the kernel
address ever.

And while we change those, make sure we use u64 instead of __u64 for
consistency

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406280633.OPB5uIFj-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202406282304.UydSVncq-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202406282242.Fk738zzy-lkp@intel.com/
Reported-by: Mirsad Todorovac <mtodorovac69@gmail.com>
Fixes: 67eccf151d76 ("HID: add source argument to HID low level functions")
Link: https://patch.msgid.link/20240701-fix-cki-v2-2-20564e2e1393@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

4 files changed, 9 insertions, 9 deletions

diff --git a/drivers/hid/bpf/hid_bpf_dispatch.c b/drivers/hid/bpf/hid_bpf_dispatch.c
index 23daf94510bb..a36e680399fe 100644
--- a/drivers/hid/bpf/hid_bpf_dispatch.c
+++ b/drivers/hid/bpf/hid_bpf_dispatch.c
@@ -440,7 +440,7 @@ hid_bpf_hw_request(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz,
 					      size,
 					      rtype,
 					      reqtype,
-					      (__u64)ctx,
+					      (u64)(long)ctx,
 					      true); /* prevent infinite recursions */
 
 	if (ret > 0)
@@ -483,7 +483,7 @@ hid_bpf_hw_output_report(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz)
 	if (!dma_data)
 		return -ENOMEM;
 
-	ret = hid_ops->hid_hw_output_report(hdev, dma_data, size, (__u64)ctx, true);
+	ret = hid_ops->hid_hw_output_report(hdev, dma_data, size, (u64)(long)ctx, true);
 
 	kfree(dma_data);
 	return ret;
@@ -505,7 +505,7 @@ __hid_bpf_input_report(struct hid_bpf_ctx *ctx, enum hid_report_type type, u8 *b
 	if (ret)
 		return ret;
 
-	return hid_ops->hid_input_report(ctx->hid, type, buf, size, 0, (__u64)ctx, true,
+	return hid_ops->hid_input_report(ctx->hid, type, buf, size, 0, (u64)(long)ctx, true,
 					 lock_already_taken);
 }
 
diff --git a/drivers/hid/bpf/hid_bpf_struct_ops.c b/drivers/hid/bpf/hid_bpf_struct_ops.c
index 37d2f8e2413a..b03b44ad3458 100644
--- a/drivers/hid/bpf/hid_bpf_struct_ops.c
+++ b/drivers/hid/bpf/hid_bpf_struct_ops.c
@@ -261,7 +261,7 @@ static void hid_bpf_unreg(void *kdata)
 	hid_put_device(hdev);
 }
 
-static int __hid_bpf_device_event(struct hid_bpf_ctx *ctx, enum hid_report_type type, __u64 source)
+static int __hid_bpf_device_event(struct hid_bpf_ctx *ctx, enum hid_report_type type, u64 source)
 {
 	return 0;
 }
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 52a75afe3e7d..0f797dab975b 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2412,7 +2412,7 @@ int __hid_hw_raw_request(struct hid_device *hdev,
 			 unsigned char reportnum, __u8 *buf,
 			 size_t len, enum hid_report_type rtype,
 			 enum hid_class_request reqtype,
-			 __u64 source, bool from_bpf)
+			 u64 source, bool from_bpf)
 {
 	unsigned int max_buffer_size = HID_MAX_BUFFER_SIZE;
 	int ret;
@@ -2454,7 +2454,7 @@ int hid_hw_raw_request(struct hid_device *hdev,
 }
 EXPORT_SYMBOL_GPL(hid_hw_raw_request);
 
-int __hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len, __u64 source,
+int __hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len, u64 source,
 			   bool from_bpf)
 {
 	unsigned int max_buffer_size = HID_MAX_BUFFER_SIZE;
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index c2396916cdaa..716294e40e8a 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -140,7 +140,7 @@ static ssize_t hidraw_send_report(struct file *file, const char __user *buffer,
 
 	if ((report_type == HID_OUTPUT_REPORT) &&
 	    !(dev->quirks & HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP)) {
-		ret = __hid_hw_output_report(dev, buf, count, (__u64)file, false);
+		ret = __hid_hw_output_report(dev, buf, count, (u64)(long)file, false);
 		/*
 		 * compatibility with old implementation of USB-HID and I2C-HID:
 		 * if the device does not support receiving output reports,
@@ -151,7 +151,7 @@ static ssize_t hidraw_send_report(struct file *file, const char __user *buffer,
 	}
 
 	ret = __hid_hw_raw_request(dev, buf[0], buf, count, report_type,
-				   HID_REQ_SET_REPORT, (__u64)file, false);
+				   HID_REQ_SET_REPORT, (u64)(long)file, false);
 
 out_free:
 	kfree(buf);
@@ -228,7 +228,7 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t
 	}
 
 	ret = __hid_hw_raw_request(dev, report_number, buf, count, report_type,
-				   HID_REQ_GET_REPORT, (__u64)file, false);
+				   HID_REQ_GET_REPORT, (u64)(long)file, false);
 
 	if (ret < 0)
 		goto out_free;