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Commit 80759649 authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Joerg Roedel
Browse files

iommu/ipmmu-vmsa: Add an array of slave devices whitelist 



To avoid adding copy and pasted strcmp codes in the future,
this patch adds an array "rcar_gen3_slave_whitelist" to check
whether the device can work with the IPMMU or not.

Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent b7ee92c6

drivers/iommu/ipmmu-vmsa.c

+12 −1
Original line number Diff line number Diff line
@@ -770,8 +770,13 @@ static const struct soc_device_attribute soc_rcar_gen3_whitelist[] = { 
	{ /* sentinel */ }

};



static const char * const rcar_gen3_slave_whitelist[] = {

};



static bool ipmmu_slave_whitelist(struct device *dev)

{

	unsigned int i;



	/*

	 * For R-Car Gen3 use a white list to opt-in slave devices.

	 * For Other SoCs, this returns true anyway.
@@ -783,7 +788,13 @@ static bool ipmmu_slave_whitelist(struct device *dev) 
	if (!soc_device_match(soc_rcar_gen3_whitelist))

		return false;



	/* By default, do not allow use of IPMMU */

	/* Check whether this slave device can work with the IPMMU */

	for (i = 0; i < ARRAY_SIZE(rcar_gen3_slave_whitelist); i++) {

		if (!strcmp(dev_name(dev), rcar_gen3_slave_whitelist[i]))

			return true;

	}



	/* Otherwise, do not allow use of IPMMU */

	return false;

}