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GET /api/1.1/patches/2230776/?format=api
{ "id": 2230776, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230776/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260430024945.3413973-9-wei.fang@nxp.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.1/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260430024945.3413973-9-wei.fang@nxp.com>", "date": "2026-04-30T02:49:38", "name": "[v5,net-next,08/15] net: enetc: add multiple command BD rings support", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "05c581eb7211cf6fdd864b319ad86bb06f937505", "submitter": { "id": 84380, "url": "http://patchwork.ozlabs.org/api/1.1/people/84380/?format=api", "name": "Wei Fang", "email": "wei.fang@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260430024945.3413973-9-wei.fang@nxp.com/mbox/", "series": [ { "id": 502180, "url": "http://patchwork.ozlabs.org/api/1.1/series/502180/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502180", "date": "2026-04-30T02:49:30", "name": "Add preliminary NETC switch support for i.MX94", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/502180/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230776/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230776/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20311-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": 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c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=dUoYI37GkQNNx46g2NDt3IUbaaHoWLfypsWkF7MaxNw=;\n b=Z6ocWYEv9W4Nx2GJZ44okRsbUd00Xi2nItBgfx+WUgD0l/8K4yYs7I8G3PP1Cfz0ZQ5eaZQdkR4LVpxs+H4nD+/n1/oMjQMA58QQejCKiZ3C7CJ1ipo0FCNbUINzDGsWlr+NPuV4/GDY+guvLf+B8kD2mNZN+Qr/xSFmlXjgeozYWt6TZNUbPtToow3t6DLp0MD+fjoZ6P4tkNlH5zmYmXfwx+CHuMDGpE+GvjddqE1lK2FGNzguZCxbXFCj7Im94TqXmDC+m6HVLqWGzJMUArE9+KdKR/2MCRlpPz0CB5zPiEyNBfInnsJx0Cldp8NMvcPJLnMPCwjB1zL7mxWUow==", "From": "Wei Fang <wei.fang@nxp.com>", "To": "claudiu.manoil@nxp.com,\n\tvladimir.oltean@nxp.com,\n\txiaoning.wang@nxp.com,\n\tandrew+netdev@lunn.ch,\n\tdavem@davemloft.net,\n\tedumazet@google.com,\n\tkuba@kernel.org,\n\tpabeni@redhat.com,\n\trobh@kernel.org,\n\tkrzk+dt@kernel.org,\n\tconor+dt@kernel.org,\n\tf.fainelli@gmail.com,\n\tfrank.li@nxp.com,\n\tchleroy@kernel.org,\n\thorms@kernel.org,\n\tlinux@armlinux.org.uk", "Cc": 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lists.ozlabs.org" }, "content": "All the tables of NETC switch are managed through the command BD ring,\nbut unlike ENETC, the switch has two command BD rings, if the current\nring is busy, the switch driver can switch to another ring to manage\nthe table. Currently, the NTMP driver does not support multiple rings.\nTherefore, update ntmp_select_and_lock_cbdr() to select a appropriate\nring to execute the command for the switch.\n\nSigned-off-by: Wei Fang <wei.fang@nxp.com>\n---\n drivers/net/ethernet/freescale/enetc/ntmp.c | 13 +++++++++----\n 1 file changed, 9 insertions(+), 4 deletions(-)", "diff": "diff --git a/drivers/net/ethernet/freescale/enetc/ntmp.c b/drivers/net/ethernet/freescale/enetc/ntmp.c\nindex add8e30a6061..4bb7d06e5dfd 100644\n--- a/drivers/net/ethernet/freescale/enetc/ntmp.c\n+++ b/drivers/net/ethernet/freescale/enetc/ntmp.c\n@@ -144,11 +144,16 @@ static void ntmp_clean_cbdr(struct netc_cbdr *cbdr)\n static void ntmp_select_and_lock_cbdr(struct ntmp_user *user,\n \t\t\t\t struct netc_cbdr **cbdr)\n {\n-\t/* Currently only ENETC is supported, and it has only one command\n-\t * BD ring.\n-\t */\n-\t*cbdr = &user->ring[0];\n+\tfor (int i = 0; i < user->cbdr_num; i++) {\n+\t\t*cbdr = &user->ring[i];\n+\t\tif (mutex_trylock(&(*cbdr)->ring_lock))\n+\t\t\treturn;\n+\t}\n \n+\t/* If all command BD rings are locked, we need to select one of\n+\t * them and wait for it.\n+\t */\n+\t*cbdr = &user->ring[raw_smp_processor_id() % user->cbdr_num];\n \tmutex_lock(&(*cbdr)->ring_lock);\n }\n \n", "prefixes": [ "v5", "net-next", "08/15" ] }