From 1572419e943e80883da9341ca65703124938c3d8 Mon Sep 17 00:00:00 2001
From: Davidlohr Bueso <dave@gnu.org>
Date: Wed, 11 Jul 2012 13:53:00 +0100
Subject: All: Replace malloc+memset with calloc

---
 libusb/core.c           |  3 +--
 libusb/io.c             |  3 +--
 libusb/os/linux_usbfs.c | 12 ++++--------
 libusb/version_nano.h   |  2 +-
 4 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/libusb/core.c b/libusb/core.c
index e10d808..eccc216 100644
--- a/libusb/core.c
+++ b/libusb/core.c
@@ -1628,12 +1628,11 @@ int API_EXPORTED libusb_init(libusb_context **context)
 		return 0;
 	}
 
-	ctx = malloc(sizeof(*ctx));
+	ctx = calloc(1, sizeof(*ctx));
 	if (!ctx) {
 		r = LIBUSB_ERROR_NO_MEM;
 		goto err_unlock;
 	}
-	memset(ctx, 0, sizeof(*ctx));
 
 #ifdef ENABLE_DEBUG_LOGGING
 	ctx->debug = LIBUSB_LOG_LEVEL_DEBUG;
diff --git a/libusb/io.c b/libusb/io.c
index d06d375..b8d445c 100644
--- a/libusb/io.c
+++ b/libusb/io.c
@@ -1232,11 +1232,10 @@ struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer(
 		+ sizeof(struct libusb_transfer)
 		+ (sizeof(struct libusb_iso_packet_descriptor) * iso_packets)
 		+ os_alloc_size;
-	struct usbi_transfer *itransfer = malloc(alloc_size);
+	struct usbi_transfer *itransfer = calloc(1, alloc_size);
 	if (!itransfer)
 		return NULL;
 
-	memset(itransfer, 0, alloc_size);
 	itransfer->num_iso_packets = iso_packets;
 	usbi_mutex_init(&itransfer->lock, NULL);
 	return USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
diff --git a/libusb/os/linux_usbfs.c b/libusb/os/linux_usbfs.c
index a01fff8..dad7536 100644
--- a/libusb/os/linux_usbfs.c
+++ b/libusb/os/linux_usbfs.c
@@ -1679,10 +1679,9 @@ static int submit_bulk_transfer(struct usbi_transfer *itransfer,
 	usbi_dbg("need %d urbs for new transfer with length %d", num_urbs,
 		transfer->length);
 	alloc_size = num_urbs * sizeof(struct usbfs_urb);
-	urbs = malloc(alloc_size);
+	urbs = calloc(1, alloc_size);
 	if (!urbs)
 		return LIBUSB_ERROR_NO_MEM;
-	memset(urbs, 0, alloc_size);
 	tpriv->urbs = urbs;
 	tpriv->num_urbs = num_urbs;
 	tpriv->num_retired = 0;
@@ -1808,10 +1807,9 @@ static int submit_iso_transfer(struct usbi_transfer *itransfer)
 	usbi_dbg("need %d 32k URBs for transfer", num_urbs);
 
 	alloc_size = num_urbs * sizeof(*urbs);
-	urbs = malloc(alloc_size);
+	urbs = calloc(1, alloc_size);
 	if (!urbs)
 		return LIBUSB_ERROR_NO_MEM;
-	memset(urbs, 0, alloc_size);
 
 	tpriv->iso_urbs = urbs;
 	tpriv->num_urbs = num_urbs;
@@ -1845,12 +1843,11 @@ static int submit_iso_transfer(struct usbi_transfer *itransfer)
 
 		alloc_size = sizeof(*urb)
 			+ (urb_packet_offset * sizeof(struct usbfs_iso_packet_desc));
-		urb = malloc(alloc_size);
+		urb = calloc(1, alloc_size);
 		if (!urb) {
 			free_iso_urbs(tpriv);
 			return LIBUSB_ERROR_NO_MEM;
 		}
-		memset(urb, 0, alloc_size);
 		urbs[i] = urb;
 
 		/* populate packet lengths */
@@ -1934,10 +1931,9 @@ static int submit_control_transfer(struct usbi_transfer *itransfer)
 	if (transfer->length - LIBUSB_CONTROL_SETUP_SIZE > MAX_CTRL_BUFFER_LENGTH)
 		return LIBUSB_ERROR_INVALID_PARAM;
 
-	urb = malloc(sizeof(struct usbfs_urb));
+	urb = calloc(1, sizeof(struct usbfs_urb));
 	if (!urb)
 		return LIBUSB_ERROR_NO_MEM;
-	memset(urb, 0, sizeof(struct usbfs_urb));
 	tpriv->urbs = urb;
 	tpriv->num_urbs = 1;
 	tpriv->reap_action = NORMAL;
diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index 6fc6748..e6ad1ad 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 10537
+#define LIBUSB_NANO 10538
-- 
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