82 lines
2.4 KiB
Diff
82 lines
2.4 KiB
Diff
From d798a871a0b27a953a80afa7b696a44cd8a93fdf Mon Sep 17 00:00:00 2001
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From: Andre Mauricio Zelak <andre.zelak@windriver.com>
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Date: Mon, 12 Jun 2023 15:04:11 -0300
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Subject: [PATCH 19/57] Introduce error codes for the run_pmc method.
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The run_pmc function is used by several of the PMC agent methods, but it
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breaks the pattern of returning zero on success. However, the user facing
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PMC agent methods will need to conform to the return code convention used
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throughout the stack.
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In order to migrate to proper return codes, this patch replaces the hard
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coded result values with macros so that the interface methods can translate
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them to the required semantics of zero on success.
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Signed-off-by: Richard Cochran <richardcochran@gmail.com>
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Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
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[commit 802259bbe40faa5f8bdebab36e6fbcbc51c3c2a2 upstream]
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Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
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---
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pmc_agent.c | 19 +++++++++----------
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1 file changed, 9 insertions(+), 10 deletions(-)
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diff --git a/pmc_agent.c b/pmc_agent.c
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index 6e9c023..22d9c5b 100644
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--- a/pmc_agent.c
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+++ b/pmc_agent.c
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@@ -93,12 +93,11 @@ static int get_mgt_err_id(struct ptp_message *msg)
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return mgt->id;
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}
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-/* Return values:
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- * 1: success
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- * 0: timeout
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- * -1: error reported by the other side
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- * -2: local error, fatal
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- */
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+#define RUN_PMC_OKAY 1
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+#define RUN_PMC_TMO 0
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+#define RUN_PMC_NODEV -1
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+#define RUN_PMC_INTR -2
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+
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static int run_pmc(struct pmc_agent *node, int timeout, int ds_id,
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struct ptp_message **msg)
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{
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@@ -115,12 +114,12 @@ static int run_pmc(struct pmc_agent *node, int timeout, int ds_id,
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cnt = poll(pollfd, N_FD, timeout);
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if (cnt < 0) {
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pr_err("poll failed");
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- return -2;
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+ return RUN_PMC_INTR;
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}
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if (!cnt) {
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/* Request the data set again in the next run. */
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node->pmc_ds_requested = 0;
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- return 0;
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+ return RUN_PMC_TMO;
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}
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/* Send a new request if there are no pending messages. */
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@@ -154,7 +153,7 @@ static int run_pmc(struct pmc_agent *node, int timeout, int ds_id,
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res = is_msg_mgt(*msg);
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if (res < 0 && get_mgt_err_id(*msg) == ds_id) {
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node->pmc_ds_requested = 0;
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- return -1;
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+ return RUN_PMC_NODEV;
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}
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if (res <= 0 ||
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node->recv_subscribed(node->recv_context, *msg, ds_id) ||
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@@ -164,7 +163,7 @@ static int run_pmc(struct pmc_agent *node, int timeout, int ds_id,
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continue;
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}
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node->pmc_ds_requested = 0;
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- return 1;
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+ return RUN_PMC_OKAY;
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}
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}
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--
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2.30.2
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