bus/dpaa: fix build with musl

[ upstream commit e9fd4b8 ]

The header files argp.h and error.h do not exist in musl libc.

Fix build with musl libc by using err(3) instead of
the GNU-specific error(3).

We could have used the identical errx("...: %s", strerror(ret))` but
strerror(3) is not thread-safe and the strerror_r variant has two
incompatible versions, one GNU specific and one XSI-compliant.
Avoid the mess by letting "err" use the thread-local errno.

This also fixes error message for kzmalloc failures which previously
would always have given "Unknown error -1", since that is what
strerror(-1) returns. Let "err" use the proper error message from errno
which is set by kzalloc.

Fixes: 9d32ef0 ("bus/dpaa: support creating dynamic HW portal")
Fixes: f09ede6 ("bus/dpaa: add BMAN driver core")
Fixes: 5b22cf7 ("bus/dpaa: introducing FMan configurations")
Fixes: 39f373c ("bus/dpaa: add compatibility and helper macros")

Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>

drivers/bus/dpaa/base/fman/netcfg_layer.c

@@ -8,7 +8,7 @@
 #include <dpaa_of.h>
 #include <net/if.h>
 #include <sys/ioctl.h>
-#include <error.h>
+#include <err.h>
 #include <net/if_arp.h>
 #include <assert.h>
 #include <unistd.h>
@@ -89,7 +89,7 @@ netcfg_acquire(void)
 	 */
 	skfd = socket(AF_PACKET, SOCK_RAW, 0);
 	if (unlikely(skfd < 0)) {
-		error(0, errno, "%s(): open(SOCK_RAW)", __func__);
+		err(0, "%s(): open(SOCK_RAW)", __func__);
 		return NULL;
 	}
 

drivers/bus/dpaa/base/qbman/bman_driver.c

@@ -11,6 +11,7 @@
 #include <process.h>
 #include "bman_priv.h"
 #include <sys/ioctl.h>
+#include <err.h>
 
 /*
  * Global variables of the max portal/pool number this bman version supported
@@ -40,7 +41,8 @@ static int fsl_bman_portal_init(uint32_t idx, int is_shared)
 	ret = pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t),
 				     &cpuset);
 	if (ret) {
-		error(0, ret, "pthread_getaffinity_np()");
+		errno = ret;
+		err(0, "pthread_getaffinity_np()");
 		return ret;
 	}
 	pcfg.cpu = -1;
@@ -60,7 +62,8 @@ static int fsl_bman_portal_init(uint32_t idx, int is_shared)
 	map.index = idx;
 	ret = process_portal_map(&map);
 	if (ret) {
-		error(0, ret, "process_portal_map()");
+		errno = ret;
+		err(0, "process_portal_map()");
 		return ret;
 	}
 	/* Make the portal's cache-[enabled|inhibited] regions */
@@ -104,8 +107,10 @@ static int fsl_bman_portal_finish(void)
 	cfg = bman_destroy_affine_portal();
 	DPAA_BUG_ON(cfg != &pcfg);
 	ret = process_portal_unmap(&map.addr);
-	if (ret)
-		error(0, ret, "process_portal_unmap()");
+	if (ret) {
+		errno = ret;
+		err(0, "process_portal_unmap()");
+	}
 	return ret;
 }
 

drivers/bus/dpaa/base/qbman/qman_driver.c

@@ -9,6 +9,8 @@
 #include <process.h>
 #include "qman_priv.h"
 #include <sys/ioctl.h>
+#include <err.h>
+
 #include <rte_branch_prediction.h>
 
 /* Global variable containing revision id (even on non-control plane systems
@@ -40,7 +42,8 @@ static int fsl_qman_portal_init(uint32_t index, int is_shared)
 	map.index = index;
 	ret = process_portal_map(&map);
 	if (ret) {
-		error(0, ret, "process_portal_map()");
+		errno = ret;
+		err(0, "process_portal_map()");
 		return ret;
 	}
 	qpcfg.channel = map.channel;
@@ -86,8 +89,10 @@ static int fsl_qman_portal_finish(void)
 	cfg = qman_destroy_affine_portal(NULL);
 	DPAA_BUG_ON(cfg != &qpcfg);
 	ret = process_portal_unmap(&map.addr);
-	if (ret)
-		error(0, ret, "process_portal_unmap()");
+	if (ret) {
+		errno = ret;
+		err(0, "process_portal_unmap()");
+	}
 	return ret;
 }
 
@@ -136,7 +141,8 @@ struct qman_portal *fsl_qman_fq_portal_create(int *fd)
 
 	q_pcfg = kzalloc((sizeof(struct qm_portal_config)), 0);
 	if (!q_pcfg) {
-		error(0, -1, "q_pcfg kzalloc failed");
+		/* kzalloc sets errno */
+		err(0, "q_pcfg kzalloc failed");
 		return NULL;
 	}
 
@@ -145,7 +151,8 @@ struct qman_portal *fsl_qman_fq_portal_create(int *fd)
 	q_map.index = QBMAN_ANY_PORTAL_IDX;
 	ret = process_portal_map(&q_map);
 	if (ret) {
-		error(0, ret, "process_portal_map()");
+		errno = ret;
+		err(0, "process_portal_map()");
 		kfree(q_pcfg);
 		return NULL;
 	}

drivers/bus/dpaa/include/netcfg.h

@@ -9,7 +9,6 @@
 #define __NETCFG_H
 
 #include <fman.h>
-#include <argp.h>
 
 /* Configuration information related to a specific ethernet port */
 struct fm_eth_port_cfg {

drivers/common/dpaax/compat.h

@@ -34,7 +34,6 @@
 #include <assert.h>
 #include <dirent.h>
 #include <inttypes.h>
-#include <error.h>
 #include <rte_byteorder.h>
 #include <rte_atomic.h>
 #include <rte_spinlock.h>