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bus: fsl-mc: use raw spin lock to serialize mc cmds

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Replace the spinlock that serializes the MC commands with a raw
spinlock. This is needed for the RT kernel because there are MC
commands sent in interrupt context.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Link: https://lore.kernel.org/r/20200717154800.17169-3-ioana.ciornei@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Laurentiu Tudor
2020-07-17 18:47:59 +03:00
committed by Greg Kroah-Hartman
parent a3b7a58182
commit 9a872def59
3 changed files with 4 additions and 4 deletions
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include/linux/fsl/mc.h
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@@ -339,7 +339,7 @@ struct fsl_mc_io {
* This field is only meaningful if the
* FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
*/
spinlock_t spinlock; /* serializes mc_send_command() */
raw_spinlock_t spinlock; /* serializes mc_send_command() */
};
};