| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.5 69/88] libahci: save port map for forced port map | Date | Mon, 9 May 2016 09:21:58 +0200 |
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4.5-stable review patch. If anyone has any objections, please let me know.
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From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
commit 2fd0f46cb1b82587c7ae4a616d69057fb9bd0af7 upstream.
In usecases where force_port_map is used saved_port_map is never set, resulting in not programming the PORTS_IMPL register as part of initial config. This patch fixes this by setting it to port_map even in case where force_port_map is used, making it more inline with other parts of the code.
Fixes: 566d1827df2e ("libata: disable forced PORTS_IMPL for >= AHCI 1.3") Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/ata/libahci.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -469,6 +469,7 @@ void ahci_save_initial_config(struct dev dev_info(dev, "forcing port_map 0x%x -> 0x%x\n", port_map, hpriv->force_port_map); port_map = hpriv->force_port_map; + hpriv->saved_port_map = port_map; } if (hpriv->mask_port_map) {
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