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https://github.com/torvalds/linux
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b7c4db8616
Currently, the clksrc-probe is not able to handle any error from the init functions. There are different issues with the current code: - the code is duplicated in the init functions by writing error - every driver tends to panic in its own init function - counting the number of clocksources is not reliable This patch adds another table to store the functions returning an error. The table is temporary while we convert all the drivers to return an error and will disappear. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/acpi.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/clocksource.h>
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extern struct of_device_id __clksrc_of_table[];
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extern struct of_device_id __clksrc_ret_of_table[];
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static const struct of_device_id __clksrc_of_table_sentinel
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__used __section(__clksrc_of_table_end);
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static const struct of_device_id __clksrc_ret_of_table_sentinel
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__used __section(__clksrc_ret_of_table_end);
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void __init clocksource_probe(void)
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{
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struct device_node *np;
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const struct of_device_id *match;
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of_init_fn_1 init_func;
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of_init_fn_1_ret init_func_ret;
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unsigned clocksources = 0;
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int ret;
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for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
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if (!of_device_is_available(np))
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continue;
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init_func = match->data;
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init_func(np);
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clocksources++;
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}
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for_each_matching_node_and_match(np, __clksrc_ret_of_table, &match) {
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if (!of_device_is_available(np))
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continue;
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init_func_ret = match->data;
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ret = init_func_ret(np);
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if (ret) {
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pr_err("Failed to initialize '%s': %d",
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of_node_full_name(np), ret);
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continue;
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}
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clocksources++;
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}
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clocksources += acpi_probe_device_table(clksrc);
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if (!clocksources)
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pr_crit("%s: no matching clocksources found\n", __func__);
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}
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