eb62cca9be
The getter callers doesn't know the valid Physical Queues (PQ) values.
This patch makes sure that a valid PQ will always be returned.
The patch consists of 3 fixes:
- When qed_init_qm_get_idx_from_flags() receives a disabled flag, it
returned PQ 0, which can potentially be another function's pq. Verify
that flag is enabled, otherwise return default start_pq.
- When qed_init_qm_get_idx_from_flags() receives an unknown flag, it
returned NULL and could lead to a segmentation fault. Return default
start_pq instead.
- A modulo operation was added to MCOS/VFS PQ getters to make sure the
PQ returned is in range of the required flag.
Fixes: b5a9ee7cf3 ("qed: Revise QM cofiguration")
Signed-off-by: Denis Bolotin <denis.bolotin@cavium.com>
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.