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clkdev: Update clkdev id usage to allow for longer names 

JIRA: https://issues.redhat.com/browse/RHEL-5705

commit 99f4570cfba1e60daafde737cb7e395006d719e6
Author: Michael J. Ruhl <michael.j.ruhl@intel.com>
Date:   Fri Feb 23 15:25:56 2024 -0500

    clkdev: Update clkdev id usage to allow for longer names

    clkdev DEV ID information is limited to an array of 20 bytes
    (MAX_DEV_ID).  It is possible that the ID could be longer than
    that.  If so, the lookup will fail because the "real ID" will
    not match the copied value.

    For instance, generating a device name for the I2C Designware
    module using the PCI ID can result in a name of:

    i2c_designware.39424

    clkdev_create() will store:

    i2c_designware.3942

    The stored name is one off and will not match correctly during probe.

    Increase the size of the ID to allow for a longer name.

    Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
    Link: https://lore.kernel.org/r/20240223202556.2194021-1-michael.j.ruhl@intel.com
    Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Signed-off-by: Joel Slebodnick <jslebodn@redhat.com>
This commit is contained in:
Joel Slebodnick 2024-03-26 15:29:58 -04:00
parent 70bd824ddb
commit efe9c61809
1 changed files with 1 additions and 1 deletions
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2
drivers/clk/clkdev.c
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@ -144,7 +144,7 @@ void clkdev_add_table(struct clk_lookup *cl, size_t num)
mutex_unlock(&clocks_mutex); mutex_unlock(&clocks_mutex);
} }
#define MAX_DEV_ID 20 #define MAX_DEV_ID 24
#define MAX_CON_ID 16 #define MAX_CON_ID 16
struct clk_lookup_alloc { struct clk_lookup_alloc {