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felix: Fix initialization of ioremap resources

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The caller of devm_ioremap_resource(), either accidentally
or by wrong assumption, is writing back derived resource data
to global static resource initialization tables that should
have been constant.  Meaning that after it computes the final
physical start address it saves the address for no reason
in the static tables.  This doesn't affect the first driver
probing after reboot, but it breaks consecutive driver reloads
(i.e. driver unbind & bind) because the initialization tables
no longer have the correct initial values.  So the next probe()
will map the device registers to wrong physical addresses,
causing ARM SError async exceptions.
This patch fixes all of the above.

Fixes: 5605194877 ("net: dsa: ocelot: add driver for Felix switch family")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Claudiu Manoil
2020-05-22 11:54:34 +03:00
committed by David S. Miller
parent bd6972226f
commit b4024c9e5c
3 changed files with 24 additions and 27 deletions
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6
drivers/net/dsa/ocelot/felix.h
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@@ -8,9 +8,9 @@
/* Platform-specific information */
struct felix_info {
struct resource *target_io_res;
struct resource *port_io_res;
struct resource *imdio_res;
const struct resource *target_io_res;
const struct resource *port_io_res;
const struct resource *imdio_res;
const struct reg_field *regfields;
const u32 *const *map;
const struct ocelot_ops *ops;