Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1209623

[PATCH] usbip: vhci_hcd: Convert use of __constant_cpu_to_le16 to cpu_to_le16

From Vaishali Thakkar <vthakkar1994@gmail.com>
Newsgroups linux.kernel
Subject [PATCH] usbip: vhci_hcd: Convert use of __constant_cpu_to_le16 to cpu_to_le16
Date 2015-08-19 07:20 +0200
Message-ID <pZ3X4-4C8-5@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

Show all headers | View raw


In big endian cases, macro cpu_to_le16 unfolds to __swab16 which
provides special case for constants. In little endian cases,
__constant_cpu_to_le16 and cpu_to_le16 expand directly to the
same expression. So, replace __constant_cpu_to_le16 with
cpu_to_le16 with the goal of getting rid of the definition of
__constant_cpu_to_le16 completely.

The semantic patch that performs this transformation is as follows:

@@expression x;@@

- __constant_cpu_to_le16(x)
+ cpu_to_le16(x)

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
---
 drivers/usb/usbip/vhci_hcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index e9ef1ec..42c8231 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -218,7 +218,7 @@ static inline void hub_descriptor(struct usb_hub_descriptor *desc)
 	memset(desc, 0, sizeof(*desc));
 	desc->bDescriptorType = USB_DT_HUB;
 	desc->bDescLength = 9;
-	desc->wHubCharacteristics = __constant_cpu_to_le16(
+	desc->wHubCharacteristics = cpu_to_le16(
 		HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_COMMON_OCPM);
 	desc->bNbrPorts = VHCI_NPORTS;
 	desc->u.hs.DeviceRemovable[0] = 0xff;
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next | Find similar | Unroll thread


Thread

[PATCH] usbip: vhci_hcd: Convert use of __constant_cpu_to_le16 to  cpu_to_le16 Vaishali Thakkar <vthakkar1994@gmail.com> - 2015-08-19 07:20 +0200

csiph-web